Whats wrong? A lot.
#1) Meal Frequency:
First you don't need 6 meals. Meal Frequency is personal preference. There is more data and science to back a lesser meal frequency for better muscle protein synthesis
http://www.slideshare.net/biolayne/optimal-protein-intake-and-meal-frequency-to-support-maximal-protein-synthesis-and-muscle-mass
Podcast:
https://www.biolayne.com/blog/news/episode-2-of-muscle-college-radio-muscle-protein-synthesis/
Protein Info:
https://www.biolayne.com/coaching/faq/part-d-protein-info/
You dont need to have X or Y amount in each meal. Or a steady caloric intake in each and every meal. Meeting your total calories in the 24 hour period is what matters most. It is most optimal to get more around your workout (and make those more carb heavy). Due to your calories being so high it may be easier to spread them out evenly because your not someone who is eating 2000-3000 calories which would be a lot easier in less meals.
#2) Post-Workout Dextrose or insulin spiking:
Dextrose you can skip. Not needed. High GI Carbs are not needed post-workout because food will be overlapping in the pre-workout meal or an intra-workout cocktail.
http://www.ncbi.nlm.nih.gov/pubmed/15277409
http://www.ncbi.nlm.nih.gov/pubmed/17617942
For most of us who train with an intra-workout BCAA or pre-workout meal there is stil food overlap as i touched in the other thread, do we need to spike insulin? absolutely not, food is still digesting, aminos are still present, so do we really need simple carbs post-workout not really..
Could they be optimal .. sure why not? but remember the total calories/macros if meeting your protein/fat/fiber minimums on a daily basis are optimal for your goal.
more:
The postexercise "anabolic window" is a highly misused & abused concept. Preworkout nutrition all but cancels the urgency, unless you're an endurance athlete with multiple glycogen-depleting events in a single day. Getting down to brass tacks, a relatively recent study (Power et al. 2009) showed that a 45g dose of whey protein isolate takes appx 50 minutes to cause blood AA levels to peak. Resulting insulin levels, which peaked at 40 minutes after ingestion, remained at elevations known to max out the inhibition of muscle protein breakdown (15-30 mU/L) for 120 minutes after ingestion. This dose takes 3 hours for insulin & AA levels to return to baseline from the point of ingestion. The inclusion of carbs to this dose would cause AA & insulin levels to peak higher & stay elevated above baseline even longer.
So much for the anabolic peephole & the urgency to down AAs during your weight training workout; they are already seeping into circulation (& will continue to do so after your training bout is done). Even in the event that a preworkout meal is skipped, the anabolic effect of the postworkout meal is increased as a supercompensatory response (Deldicque et al, 2010). Moving on, another recent study (Staples et al, 2010) found that a substantial dose of carbohydrate (50g maltodextrin) added to 25g whey protein was unable to further increase postexercise net muscle protein balance compared to the protein dose without carbs. Again, this is not to say that adding carbs at this point is counterproductive, but it certainly doesn't support the idea that you must get your lightning-fast postexercise carb orgy for optimal results.
To add to this... Why has the majority of longer-term research failed to show any meaningful differences in nutrient timing relative to the resistance training bout? It's likely because the body is smarter than we give it credit for. Most people don't know that as a result of a single training bout, the receptivity of muscle to protein dosing can persist for at least 24
http://www.ncbi.nlm.nih.gov/pubmed/21289204
#3 You don't need a post-workout shake an then a meal 1 hour later.
Again read my posts above on meal frequency. Having a meal so close together is worse for Muscle Protein Synthesis. Your reading posts or information from probably 2010 or earlier which has been debunked by current research.
https://www.slideshare.net/biolayne/optimal-protein-intake-and-meal-frequency-to-support-maximal-protein-synthesis-and-muscle-mass
https://jissn.biomedcentral.com/articles/10.1186/1550-2783-11-20
#4 keep it simple.
Focus your carb rich meals around your workout, eat less in the other meals. Since your intake is so high you can evenly spread it out say 100g pre, 100g post, 75g in the other meals throughout the day. You can keep fat lower around workouts (if it bloats you) but having a mixed meal may be better . I know john meadows is huge about it because it helps prevent smaller insulin spikes.
"I have been preaching the addition of a small amount of fat to pre workout meal for a long time so yes. Also, I think it is AOK to have in post workout meal" again. total calories.
Good video on post workout nutrition
[video=youtube;ZbJt0-5NLBM]https://www.youtube.com/watch?v=ZbJt0-5NLBM[/video]
Aim for 1g/lb of protein
at least 20% fats
rest carbs
Adjust to more fat if you find yourself getting bloated, sluggish or its too much for your body. Then you will have to look at your food sources to help get the food down (bagels, trail mix, granola, cereal's, english muffins, breads, using honey) and other carb sources to help reach your intake without bloating you and keeping fiber down.
http://www.bodyrecomposition.com/muscle-gain/general-philosophies-of-muscle-mass-gain.html
http://www.bodyrecomposition.com/muscle-gain/macronutrient-intake-for-mass-gains-qa.html
http://www.bodyrecomposition.com/muscle-gain/training-frequency-for-mass-gains.html
http://www.bodyrecomposition.com/muscle-gain/cardio-and-mass-gains.html
Philosophies, Macro intake, training , and cardio articles for you to understand and help set up what you need to do before moving forward towards more supplements or advanced workout routines.