Sorry to burst your bubble, but I don't think you'll near a pound per plant. At 11 plants, you'd be nearing 2.5g/W.

Anyways! To answer your questions:

I don't think that'll be enough to cover up the smell with 11 final plants flowering off like crazy. Will you be running a cool tube?

I do believe that it's enough to get 1g/W, as long as your skills are good enough. If you get the same g/W from last grow, which was 0.84g/W, you'll end up with 3.75 pounds.

I can certainly tell you that a month and half from seed will not be enough to harvest one pound dry per plant. Try double and onwards for that kind of pull.

LSTing does sound good, but honestly, to pull a pound per plant, you're going to have a VERY dialled system. I'd even look into double vertical cool-tubed cylinders. If you harvested 4oz/plant last run with a single 400W, expect around double/triple that.

Good luck!