I'm sort of the same. My team's aging. I have no future building blocks besides Ismael, but he's going to be 28 in two weeks and he's capped.
Economically, it makes the most sense to gut right after you win a title. You've got a ton of guaranteed cash coming in, so you can be fielding nobodies and still sell out your arena. This means ignoring the B3, which isn't fun, but you can't win the B3 without a very large bankroll to begin with. And that's something I lack.
So this is my window. I could maybe stretch it another season, but I'd have to get lucky with the TL and whose available on it for what price coincides for when I have cash.
It's far too hard (and I won't have nearly the cash necessary) to get the type of players I want for an outside attack (the TL has no viable guards with the skills necessary, and the outside bigs are all super expensive). So figuring out training would be a gigantic pain in the rear. It's possible I just say, "Screw it" and retire instead of training new guys. I doubt I train another inside focused team, although there are a few things I've wanted to change about my current team that I suppose I could do in a new one.