New grow questions, 4x8 table

I got a growing space finally available to me, i would like to do a 4x8 table with a small veg room, hope to have 2 - 4 mothers different strains, to keep my options open. I already have a 400w mh, for the veg room, of this seems to be not enough light i will just add some cfls with it.

So heres the real question, I got a space of 12ft by 8 ft with a roof height of 5.8', not as tall as id like it but i gotta take what i can get. I need to add both rooms into this so i was gunna stud walls on all four sides poly them off for a tight seal etc, put up sheet rock as a safe wall, i would like to push the table into the back left wall and running length ways as <-----> then have the clone room to the right of it so i walk in i can have space to work.

I need to know with the height of this room would be better off to run two 600w hps for flower or just a single 1000w, i figure two 600w therefore heat doesn't rape the tops of em, but i already have a 1000w, ideas suggestions??

after i fought spiders for a hour or so got the start decently cleaned, tomorrow frame the outside wall and the mother/clone room



also ive talk to the owner and dimension i was able to change so now the back wall is 12' roof height is 5.8' and it will be 9' leaving me able not to stick it cross the back now will be running with the left wall

is this the wrong spot to post this? i havent done indoor in a few years and id like some inputt

so you would want the light as high up as possible but without setting the ceiling on fire. I made a little flood table in a rubbermaid tub, I think flood and drain with soil pots is a good way to water and keep plants healthy . with the 1000 watt it will be getting hot in there , gotta set up ducts and fans I would think.

ya planning to have flood and drain without pots just into clay pebbles depending whats avaible at local hydro store and just stick the clones into the medium, so your votes for 2 600w's