Unless he usually eats fibrous/dense carbs, have him add things like oats and sweet potatoes, with the increased protein synthesis bump up the protein a bit, and this will also help with adjusting the carbs, especially when using the hghpro (you'll want steady BG levels, spikes are not good in general, and especially if looking to spike GH levels)
keep fat's on the moderate end.
I'd roll with a 35/35/30 P/C/F ratio, and go with 250-500 kcal over maintenance on workout days and stick with maintenance calorie amount on off days.