please lets not go through this again with recommendations on a 25 for this plane. You will never get it to balance correctly and it will weigh a ton . It was never designed for that size motor and will really do best with the lightest motor that you can get into that backend.
I used a TD09 on the first one and it was incredably light and a great performer. The next one had a Nova Rossi 09 in it that upped the rpms and the performance level.
I can't tell you what to do in light of the fact that everyone seems hell bent on putting a 60 in a plane designed for a 20 and saying that you'll have superior performance. In this case it ain't necessarily so.
Dennis