Questions - Need some input

After some discussion with my better half, I recently started purchasing components for my next tank!

The tank will be an Oceanic 75g RR with a yet undetermined size sump/fuge underneath.

Lighting will be a DIY LED build and will consist of:

• 30 x CREE XP-E Royal Blue
• 10 x CREE XP-E Blue
• 20 x CREE XP-G Neutral White R3

The lighting will be driven by 6 Thomas Research Products Drivers - 4x 25W for the blues and 2x 38W for the whites.
Lighting will be dimmable ...