If it's ok I thought I would chime in on 315w cmh.
The best reflector for a 5x5 tent would be the 315 LEC. It can veg a 5x5 tent no problem and it can do it with a vengeance. We keep ours at 4' from the canopy. If I was confined to a tent this would be my first choice for veg. It will smoke a t-5 fixture or a 600w MH and it will use half the power. I find that running these bulbs too close causes issues. 4-5 ft seems to be the sweet spot in my experience.
For flower switch up to a 600w
gavita SE. You can hit 2# with the right strain and the energy savings compared to old lighting tech is unreal.