the bolas launcher doesnt seem very do-able. the quarterstaff idea has already been done, so you could strait up buy that (50gp). utility belt u could enchant for holding, but that would be costly. 2, 3, and 6 seemed right on the money. for your boots, i could only think of one idea. have a wizard cast a slight "levitate" (only 1/2 an inch or so) and cast "permanency". This would also help with rough terrain. One final note. Batman is probably closer to assassin or fighter. Ninja too squishy and stealthy like the common rogue
Another problem though. If your party is going through a Troglodyte cave, i bet the entire place smells like them. they should make a roll to sniff them out instead of impossible to sneak up on, but the penalty sounds good in addition
The monk's ki IS strong, but i think you get little because it forces you to focus skill points. most all monks want high dex, but ki and a few other stuff makes you split up your points more and divide your strengths.