Which panels should I buy?

[Jronguitar]

I'm going to fabricate an aluminum tilting rack for my MH. Due to certain aesthetic aspects, and space, I'd like to keep it in a specific measuring area.

What I have to work with is 51"(4'3") X 96"(8') give or take only a few inches.

Would like to have the best panels I can buy. Ones that would work in the lowest light. And most importantly, ones that have the most watts (am I saying that right?).

Any recommendations with sources would be ideal.

Thanks, everybody. Hope all is well.