I'm with Geist and Backafter. I simulator is a great tool not just for learning/relearning, but also for trying out new maneuvers and retraining those thumbs. I've got RealFlight G2 and it works very well; I'm sure there are other great packages out there, but RealFlight seems to be the biggy with good web support and user groups. The addons are not necessary other than for new eye candy and imaginary thrills (e.g. Osprey). I think landing with RF is harder in some ways than the real thing.

The Avistar is a great intermediate trainer and a "Just Plane Fun" plane even after you become proficient at basic flying and landing. Although it's classified as a high wing plane, its cabin is so low, that it's almost a shoulder wing plane. A Saito 80 may be a bit heavy for an Avistar, although here at my club, they've flown great with Saito 72s, so check the balance closely.

Finally, get in a club and find someone to instruct you with a buddy box setup.

Joel