Hello Acidraindrips,
I can answer a few of your questions...perhaps not all. You stated that you an not go with HPS or MH lighting. My guess is that for the flowering cycle you will want to go with as much light as your space can handle. If heat is your concern...and you have a limit on temperatures....I don't think you can put too much light on the plants. Go with what works for you.

Regrading your reflected light question....I've been told to stay away from the super reflective stuff like....mylar and aluminum foil...the can magify the light and burn your plants....go with the white matte paint...I don't think you have to worry about the bucket's white surface.

Regarding your nutes.....go slow! Easy on the nutes....read the directions and err on the side of caution. I have burned some plants before with too much nutes in the water. As they say in cooking...you can always add more, but you can't take it away once you've added it to the sauce!

I can't help you with the indica/sativa questions...good luck.

So far your grow looks healthy and in good shape.

Grow strong!

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