whoa, your clown is fucking scary... with that said, I would personally choose a "normal" strain (say white widow, northern lights, ppp) in your shoes for these reasons: less electricity bills, can still be short if desired, and clone-able. Buuuuuut, with the autoflower you wouldn't have to worry about light leaks, and you'd be waiting less time for it to finish. It's your call, though.
In terms of yield, for a first grow (with adequate lighting/ environment), "no average sized herb plant [of a "normal" type strain] should ever bring in less than 1 oz dried." That's me directly quoting a bunch of random growers i met the other night in Santa Cruz. take it from them, for what its worth.
peace