-At 4 caps per day your two bottles will last 30 days, if you are looking for a full 60day cycle you'd need and additional two bottles. The planet still has a decent promo with Creatine Mono with each bottle purchased.
-The consensus seems like dramatic strength gains while on cycle which usually lead to upping the weight thrown around at the gym. The finaflex 550 produt is a great product to mitgate some of the joint pain associated with the dramtic increase in weight. An alternative is to adjust the weight increases accordingly but also increase the reps and sets. Theoretically the muscle will enter hypertrophy and grow in the muscle will occur minus the increase in joint pain.
-All reports/reviews of this product indicate a ten to twelve day build up after this its off to the races.
-with four weeks of use you'll experience some some noodling-maybe. but with an eight week cycle shut down is probable especially at 4 caps.
PCT is highly recommended if you plan on keeping those new gains, in addition to getting bak to normal sooner than later.
-Your last question was a bit vague as we all can't be sure what you didn't do last cycle but an important and often ignored element of most training cycles is the lower body. For example, using a training routine similar to the routine highlighted in the articles section on a twelve week leg program would be an area to concentrate on if you omitted that type of training during your previous cycle.
-Eat responsibly. This doesnt mean you count every calorie and go nuts about carbs, fats, etc. instead focus on eating often while also make yourself an enjoyable tasty protein shake- two scoops, peanut butter, bananna, blueberries etc. first thing in the morning it will keep you going and help with bad food decisions through out the day. Save the sweets for Post workouts- I personally go hard as a mother on a snickers bar or two after working out.
All the best.