Theres no light or air circulation for the mother, no light for the clones, and it may not be essential but you might want to put some sort of protective coating over the painted areas cus if water gets into it it can peel the paint and cause it to flake and fall of, and personaly id rather two 1000w lights as a pose to four 600w lights because than theres only gonna be one hood to cool per intake and thats goona reduce alot of heat plus save on energy costs, also it will save more room cus youll only need two ballasts instead of four.
Also i wouldnt recommend moving the walls to close as your gonna need that walking space to fix any busted hoses, or to examin the plants for diseases, or for prunning etc.
All thos fans are goona make a mess with all the cords so i would cut some 1.5 inch poly pipe to run accross the ceiling and lay the cords in the pipe to the power source to keep thigs tidy.
Thats my input anyways, hope it helped atleast a little?? theres a few more things i could point out but im sure u will have them sorted out come time to grow. Anyways man good luck it looks like u have some big ambitions, and a good girl to support u through this grow (mine wont let me grow more than 6 plants at a time) haha, so good luck and hopefully it all goes well, peace out