I had the Tower Trainer ARF and it flew great. I wish I'd gotten the kit version though so I could have built it a little better. My first RC kit was a Great Planes PT-40; it was fairly straight forward from what I remember. Another good option is the Sig Kadet LT-40 or LT-25. Sig makes excellent kits in my opinion.

As others have said, go for the ailerons. Your goal is probably to advance to models with ailerons anyway so I would just learn that from the start.