> And with 18 Dex, the first feat you should pick up is Weapon
> Finesse (unarmed strike) if you want to melee at all.
The problem with this is that it pushes back your Spring Attack unless you are a human (and get the extra feat). Since Monks get so few feats you're looking at Spring Attack at level 9. (Caveat: I havent played over level 5, but all anyone ever talks about is Spring Attack, Spring Attack, Spring Attack. So I'm assuming its an ASAP skill to pick up.) Still, Weapon Focus is a very neat way to optimize your Monk stats and should be considered.
STR (or getting Weapon Finesse) seems very important; theres nothing more hapless than slapping a big creature for d6+2 (15 STR, lvl 3 Monk) and then watching him hit you back for d8+6. A Barbarian or Fighter can keep up with this rate of damage, a medium or low STR Monk just cannot. If you are planning on holding the front-line for the party (which is not what this class is about) then doing 18 STR, 14 DEX might be a reasonable try; although, as you are finding out, the lack of HPs is a serious problem. I think its an interesting RP concept; although I think the Monk class must be mercilessly, munchkinly optimized in order to be "competetive" with the big 4 classes.