I've never seen an ARF version of the Pup.

You may want to start a kit as a long-term project (and Balsa USA is who comes to my mind there, too... their plans are very nice and the finished plane is beautiful, but not small).

It would probably serve you well to transition to a low- or mid-wing taildragger as a follow-on to your trainer and go to the bipe from there. (Think 4-Star-40 or similar.) That will give you the chance to gain some skills that will help your Pup have a way longer life expectancy.