[MRBAA]

This is all very good thinking, but I think that most of winning heads up play (once you have a grasp of odds and different strategic options) is about adjusting your play to that of your opponent and not letting unlikely situations affect future hands (for example, you bet kings up all the way and it turns out your opponent was slow playing trips he hit on fourth, filled on sixth and now raises sixth and bets seventh, leavingyou feeling like a chump, even though you played the hand right).

It's also important to note that structure matters alot as to what you call with on 3rd. In a 3-6 game wtih a .50 ante, $1 bring in/$3 complete, it's correct to limp more and complete/call completions less. But when it's a 2-4 game with a .25 ante and a $1 bring in, it's correct to both raise and call raises more.

But that's abstract. Against a timid opponent who will often fold to raises, it's always correct to raise more. Against a calling station, it's correct to raise less with marginal hands but more with strong ones. And against most opponents it's important to play to their basic tendencies and how you think they are trying to play you.