Tent height will be an issue. This 3' x 1.8' x 5' Apollo is affordable, easier to work in, and has an extra foot of headroom--which is a lot, your pots + fan + filter + light is going to eat up 2'+ of space.
What's the light? If your light is current gen LED (Quantum Board, or the like), that's about the perfect amount for 5 square feet.
This is it: https://www.amazon.com/gp/product/B00H9OVMO8/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
Its been a great tent for the price
My current light is all 3500k, can you tell me more about the advantage of going with other spectrums?
My veg tent: