This is my rationale regarding bulb choice in a hybrid fixture...
You've got two light sources: the Primes and the T5's. The advantage of the Primes is that they are controllable, give good fluorescence, and provide the shimmer effect (make the tank look pretty); however they provide poor coverage and will make heavy shadows because they're point sources. The T5's are good because they provide comprehensive coverage of light coming from nearly all directions and significantly reduce any shadows; but they're bad because they're provide no shimmer, aren't controllable, and generally aren't super flattering to our tanks (IMO).
Since T5 gives full coverage I'd choose bulbs that provide for the fullest spectrum possible (from UV to IR so to speak) so that a full spectrum of light hits your corals from all directions for good growth. This probably won't look flattering to the tank by itself so then you tune your primes to provide the right amount of blue to make everything look pretty as well as to provide for dawn/dusk effects.
My current bulb choice is a equal mix of SuperActinic and Aquablue Azure (Giesseman) or you could use True Actinic and Coral Plus from ATI. The Actinic bulbs provide the UV-A, violet, and short wavelength blue which are somewhat neglected by many LED fixtures but are very important wavelengths. The other bulb is a daylight bulb that contains peaks of green, yellow, orange, and red as well as plenty of blue. Pick any daylight bulb you want - I consider the Aquablue Azure a 50/50 bulb between a daylight and a Blue+. Other people might choose a 6500k Tropic. The point is that you're providing every wavelength your corals might need to use coming from all directions.
Then program your Primes with the appropriate mix of blue and white that's to your liking. With four T5 bulbs and probably two primes I'd expect that it's the T5's that will be doing the heavy lifting here so you don't need to worry too much about getting the spectrum "right" with the LED's - the T5's have the spectrum covered.
