Why not just go with the Pathfinder version, adjust the skills somewhat, and take out the fact that Flurry of Blows is based on the TWF tree?
Monks never wear armor. That's the whole point of them being a monk. Even the swordsage loses their light armor proficiency to gain unarmed strike progressions.
A couple of things I might have added is Superior Unarmed Strike being a bonus feat at 6th, and maybe adjusting the monk Ki pool so that it did a few of the things that their PrC versions could do (ie element damage, silver, etc). I mean, "lawful" is pretty useless for something to get past DR, but doing an extra 2d6 against chaotic creatures is nice too. Regardless, having options that they can choose from would be nice. It is a POOL after all.