Using all the tent space?

I want to have a 4x4 flood table but ive seen most growers use a 4x4 flood table in a bigger space. If i go this way i know i probly wont see the clones at the back of the tray if i do this but i think theres not much i could even do because i cant change the res. for 1 plant.
if i use the 4x4 flood table in the 4x4 tent using all the space would i be encountering any problems?. il be trimming and drying in another small tent

If it fits you'll be fine. Maintenance will be tough if you can't get to the back.