Go with the up to date aircraft. There are lots of aircraft out there other than P’s and C’s. Even if you do convert it will do your experience level good and it will take one to two hours, typically.
When I did my PPL on the PA38, the first thing I did when I got it was convert to a C172. If cost were a problem when you have your licence, you would probably go down the PFA route, which will be less different to the Kat than the P’s and C’s.
Rod