Thanks for the tip bear, my original plan was 6 per rez but I guess I got greedy . I plan on having continual harvest so have 8-9 resevoirs. One for every week of flowering and have a cloner, 2 DWC 23 gallon resevoirs (with vegging) and some mothers (probably in continual drip rockwool or something)
So I'll grow clones for two-three weeks (one week in cloner, two weeks in vegging) and then push them into flowering for 8-9 weeks.

Assuming my light rail will cover 9 resevoirs (which I think it easily will) that's 54 plants. I'm assuming around/more than a QP per resevoir (which I will be harvesting 6 plants/week)