Will t5 perform at 24" depth

I'm torn and I keep going back and forth over which way to go. I want to have ultimate flexibility. I have t5 now on my 75g. I'm thinking maybe adding an icecap system to my existing t5. Would that perform well. I did buy some mh pendants but now I'm not sure that's the way I'm going. I ordered some led bulbs which will give me the shimmer I wanted. So can I stick with t5 and have total flexibility??

 

how many bulbs is the t5?

 

I would be using my current 4 bulb t5 and adding either 2 or 3 bulb icecap system. As well as probably 4- 48 led bulb replacemens for shimmer. Or the other option is 2- 175w mh pendants along with the current t5 system I have now. I'd prefer the t5 route but I want to make sure it'll do whatever I need it to do.

 

I have 4 bulbs and at 22 inches deep i have an elegence and a fungia and many mushrooms which are all doing fine.