For a 1st 3d plane with a Tower 75 I would go for a U Can Do 46. It was my 1st 3d plane and is a very easy and predictable flier.It weighs nearly 6 lbs and has 1000 sq inches of wing area so the 75 will be good on it. Just keep the speed down. Mine is still flying after more than a year and I have never detected flutter but I am careful with it.