Some questions about growing

I'm preparing for my first grow in a few weeks. Just a few quick questions I need answered first.

I figured for my first grow, I'd grow some type of autoflowering strain, maybe some White Russian Dwarfs. Does anyone have any suggestions on what strain/company to go with? I've seen alot. Yield and Quality are my two main concerns, and am setting a goal of an ounce per plant. (is this possible?)

With that said, to grow 10 ruderalis auto plants at one time, what kind of wattage would I need, a 400, or an 1000-watt HPS/MH? I am growing in organic soil, and the plants will be very closely monitored.

Thanks all.

dont go any lower then 1000w for 10 plants. personally id go for two 1000watters, but i like to go overboard.