I am not sure I understand the question. If you won't actually be doing IDPA competition, what do you mean by IDPA "training only"?
If you mean you want a local IDPA club but that you won't be doing major matches, that's easy; lots of people do that. Go to International Defensive Pistol Association's web site and look up a club near you. If you are close enough, the Smith & Wesson Academy in Springfield, Mass, has an IDPA club and it is probably a good place to hook up with people who can steer you towards more defensive techniques. Janq shoots there, so maybe he can chime in.
In reality, though, you probably want to take at least one professionally taught class in self defense with firearms. For defensive purposes, that will be a better use of your money than shooting in local matches.