Hot rods got it. Thats gonna be a cooker.
This is simply my two cents and It should be taken with a grain of salt because the thing about growing is its your way and theirs a million ways to create a cola. ------But
I dont know if i would scrog. My 400w colas are about... you could fit two in your tent. Two colas. You would have heat issues, rot, mold or other. Also this leaves zero room for humidifier, dehumidifier, fans, cool tube, insulated ducting, scrubber, bucket or similar to put you power bar in, and then space for the plant.
Im not trying to kill it just make sure that even though veg will be cool, your flowering is going to take up SO MUCH room. PCE
A topped 4 cola girl with a 1 month veg on 400 mh is my opinion. To answer the original question. Get ready to supercrop