RE: progression from trainer to low wing
Ya I am in the same boat as you buddy!!!
I just graduated from my nexstar to a super sportster 40 MKII, you have to fly the plane a little more as it is not as forgivable as a trainer (low wing dehidral) and freakin fast!! (cannot figure out why so much difference in torque between an OS 46 FXi to a OS 46 MX)
the only difference is a little rudder and elevator control on take off , if you use rudder during flying then you should have no problem. Also let the plane land itself with a little speed control and you will land on the mains like a duck on a pond!!
Wish ya the best!!