[imfatandugly]

as far as winrate gos your playing a much larger percentage of your hands so hypothetically if your better than your opponent you should win much more per hundred hands. That being said i'd say anywhere between 5-8ptbb/100 is a good long term winrate. playing 3 tables, thats 600 hands per hour, at 1/2 that ranges between 120 an hour and 180 an hour. if your two tabling between 80 and 120.
If your playing .5/1 then multiply those numbers by about 1.2.

If I were to give myself advice at the beginging of playing heads up it would be to be more agressive on the button (raise every time you play a pot) and be more inclined to reraise or fold (passive agressive) when your out of position. Not to say that you shouldn't see flops oop but definately play more conservatively than you would on the button.

Hand reading is also alot more important than in your typical sng what with the larger stacks and all. This ofcourse comes with time, but it always helps to review hands and pay attention to your opponents tendencys.
Definately play the player. I've found that inducing bluffs against the right kind of player is hugely profitable against the right kind of player. Some people are nitty and you just have to be careful and slowly grind them down. Some people are rediculous with the bet pot button, especially with their weaker holdings.

Girls suck to play heads up.