Well, a character like that can bring in great opportunities for roleplay, because there is always going to be some disagreement about what to do and how to do it. The biggest thing to think about would be, if the group is ok with it. If they say "well, it would be interesting to have one character in the group who is holding up the laws as best he can, while the rest is playing fast and loose with them", then the character would be a good fit. If, on the other hand your group tends to play more in a "we are now a group and go on a quest" sort of way, then it will probably do more harm than good.
As far as I can tell, there is no actual lawbreaker in the group, so that is a point in your favor. Depending on how the Focused Practitioner is cheating (reading other peoples minds in poker or using kinetomancy to tilt a dice?), that might be an issue, but even if your warden might hate him cheating at dice, he isn't doing anything illegal. If your warden is extremely hardcore, he might have a problem with the chi healer transforming others to a degree, but even that should be fine, I think.
Bottom line: talk to your group, tell them how you imagine your character, how you intend to play him, etc. Give them opportunity to raise objection early on, so you can either calm them down or rethink that aspect of your character in relation to the group. If he is hard on some specific aspects of the laws, give him a reason other than just "it's the law", otherwise it will become pretty dull.
