Have never ran an HPS, but I know some folks that love em. Lol. Use what ya will, they can all grow some dank. ???
For the flower room I run a 315 cmh (3100 bulb) in the center of the room with another 1200-1300 watts of cobs and qb's (3500 +3000+ uv & ir) in a 4' x 8.5' grow space.
I really do like the cmh being in there, adds a certain type of glow. Lol.
Veg room is about 500 watts of qb's in 5000k over a 4' x 5'.
Hell yeah, use what ya got and grow dank. ?