I've been an instructor for 20 years or so and I think muddpup is correct in what he posted, but I don't think your second plane should be a low wing. I think you would be much better off with a high wing with basic aerobatic capabilities and a symmetrical airfoil. Something that can be stepped on as you skill increases, inexpensive, with some positive stability. The traditional "stick" or the Super Kraft SK-50 would serve you better. But this is just my opinion and according to my wife I'm wrong much more than I'm right.