RE: My kids got the bug ;D
Good luck to you. I am in the same position right now. I have been asking our instructors to take the kids up, and shying away from taking them up myself. Like yourself, I am not afraid of being able to recover from their mistakes. I just don't have the patience or the skills to really teach them.
Once they have learned enough from the instructors, I will probably start taking them up more often, but I think that our instructors have a whole different set of skills than your average pilot.
My girls both have SPAD trainers, but I put an extra big battery in my Alpha so that it can handle a whole evening of training for all three kids.
Good luck.