1000.00 won't go very far ,
i suggest you start w/ a single 1000w/ hps a cooltube and very good exhaust fan= hurricane or vortex . and expand like you were talking about in the future so you can in time have a perpetual harvest . as far as ebb n flow i'm no help , never done it . i'm stuck on 5 gal. buckets or waterfarms n grow super mutants now to keep plant count down . as laws in my area suck .
peace
crispi