A beginner learning on a Mustang? It can be done but how many will be successful? I got a pal, he flies helis only, first plane was the Kyosho F16 and he did fine, now that is super rare. Again, he is Austrain, a stickler for precision and he is most careful.

If you must insist on a nice looking trainer:

WM Sky Raider Mach II
WM Rambler 45

These 2 planes float in for landings and are tail draggers.