Hi there, I like your detail, I did the same 3D drawing thing when planning my setup, but it was amazing how much it changed from the original design during build, and incremental improvements thereafter.
One thing to consider is doing away with the intake fans & just putting light traps on the inlet holes, the exhaust will pull fresh air in for you ( Passive system ) saves some money too.
Also as I found out later the intakes need to be about double the diameter of you exhaust ie: mine are 150mm exhaust & 300mm intake. ( 8x5 room )
See here:
How Do I add Ventilation to my Grow Area
I'm sure there are some more experienced people here happy to help with the other stuff not in my field of expertise.