I wouldn't try to table select that much because if you can't beat any of the regs at 50nl you shouldn't be playing it in the first place. The rake is just way too high.

I agree with a two buyin stop-loss. It's just very easy to tilt in HU and it's important to be on your A game.

It's fine not to use a HUD if it helps you get a better feel for your opponents.