RE: Tiger Moth Trainer?
UM...
Chalk another one up for 'get a real trainer'. Sims are not really much good until you are working with an instructor. I flew a big scale scratch-built TM (110" WS) and I discovered a new definition for the term 'adverse yaw'. I don't think a student needs to deal with that much rudder correction JMHO.
As far as the AT-6...are you kidding? I have seen experienced pilots tip-stall those into the ground. There is no space bar at the field...I checked.
I really think you should invest in a trainer. I never thought of the Rascal as a trainer, that would be interesting. Look at the SIG Kadet Senior...an awesome trainer and you can put a 4-stroke engine, (.70-.90) on it that you can use later-on.
Good Luck!!