If you wanted to experiment with a biplane on the cheap, The Wingsmaker has a foam reciever ready one that runs on 3s1300.

I would make sure you are fully comfortable with a regular 4 chan trainer, including inverted and basic aerobatics first, though.

As as far as a large 3D looking plane with gentle flying characteristics, it depends on what you mean by large, but the Reactor 1.60 is very forgiving and flies like a big foamy.

Again, get fully comfortable with a trainer, and maybe a tail dragging sport plane first.