I went from a trainer to a Tiger 60, did it in a short period of time after solo'ing with the trainer. Later on, I picked up a 4*40.

Anyway, the first few flights with the Tiger 60 were under the supervision of an instructor but not on the buddy box. We both had the confidence (and kept the altitude at least 3 mistakes high ) that I would be able to land it after flying it. That worked out well.

As far as using a low-wing sports plane for a trainer, well, I see two concerns, one would be the issue of the self-righting after letting go of the sticks during a confusing part of the flight. If you buddy box with a qualified instructor, that should take care of that issue. The other one would be the faster (in some cases much faster) approaches and landings.

As I said, I have a 4*40. Bought it about 6 months after the Tiger 60. The engine of choice you are using may be a tad much for that plane initially. I had an OS 46 on mine at first and enjoyed flying it, or that is learning to fly it, then later on moved up to an OS 50, both two strokes. The difference was definitely noticeable.

Just learn some throttle control and make sure the CG is set perfectly and you should do alright, with an instructor, that is.

DS.