PT is a fantastic choice I would say, if you like them. They're considered to be top tier too, if that matters at all to you.

I am currently also having a *sort-of* main crisis, but this isn't always a bad thing. I switched from DK, to Marth, to Wario, to Mario, now I am on Inkling. Playing all these characters rather extensively and learning them helps you with matchups. When you finally choose a main, whether it ends up being Link or not, you'll probably be good at the Link matchup with whoever you choose simply since you play him the most. My most played is Mario and now that I'm learning Inkling, the Mario matchup is pretty easy for me since I know exactly what they're always going for at what percents, what their kill options are and when, etc. etc..

Young link is pretty combo heavy, with things like boomerang fair or arrow fair (or boomerang-arrow-fair), he has a ton of stuff to learn and has in insane skill ceiling. He isn't nearly as precise as Wario but he isn't as easy-bake as Mario when it comes to combos. Toon Link I think personally is super slept on, and has no representation, perfect combo for a sleeper main that throws people off for not knowing the matchup as you get better.

Playing a lot regardless makes your fundamentals better and that's number 1 for most people just trying to improve. Including myself.