Grow Room in the raw

Good day everyone, so this is the space I have available for growing. Actually two 'rooms' like this. I plan on starting out with around 5 plants, Barney's LSD, Utopia Haze, Amnesia Lemon, Red Dragon & G13. Where I live is at a high altitude, do you recommend I grow these strains or are there others you recommend would fair better in these conditions? 2820 M (9252 feet) altitude, the temperature ranges from 7 degrees C (55 F) at night to 26 C (78 F) at noon, and averages 15 C (64 F) throughout the day. I was thinking of using natural sunlight for UVB as I heard this is better for THC production and since I'm very very near the equator this would work, alternatively I have UVB light available as well. I plan on growing on soil. I was thinking of using a 400w HPS that is compatible with a 4OOw MH too. Is this appropriate lighting for 5 plants or should I use a smaller amount? Thanks in advance!

thats beautiful do you have a way to vent the room?

thanks! yeah, this is like a couple inches away from a window, so i could pop open the entrance to the room and crack the window open. what do you think?

keep a good fan circulating in there

ok. i was planning on doing that as well. thanks! so do you think the lighting details are good?

i use one 400w hps in my closet that is at 4x6 the plants are crowded under the lights but i can fit 9 plants in 3 gal containers and they get adequate light

Thats a good spot man, a little work and it will be just fine.

where do you live that it stays that cool?

Wish I had that much space to grow, I'm rocking a 2.5' x 4' closet space with a 600w and 6 plants, so anything is possible.

As long as you keep temp's in check, it will be fine.