I think the best way to get your answer is find local instructors that can teach tech, and talk to them. Tell them your goals and ask them what they would recommend. It's just a guess, but you probably don't have a big pile of options to choose from, so talking to all the shops in your area that offer tech instruction probably isn't TOO big of a task.
If you can't find tech instruction in your area, maybe better to come here and ask for recommendations on tech instructors to travel to.
After you have talked to your various options, if you still aren't of a clear mind on who to go with, then maybe come back here and ask for input based on what you have learned from the people you talked to?
I would also encourage someone to ask prospective instructors about their own personal technical diving background and experience. Someone that can "teach tech" but never does tech diving on their own may not be the person you're looking for.