If you don't have funds for a sim, you probably don't have $150 -$250 I fly 2 Burritos with 2 strokes, a UCD 46 with a 4 stroke and have a Mojo that is yet to fly. The UCD is the easiest to fly but the Burritos are really easy too, just a little quicker. If you hock the farm to get a Saito for your 1st 3d plane and right off bash it in and wreck the crank, case, shaft etc your 3d days may be done for a long while. If you get a $70 kit and a decent low priced 2 stroke you can fly fine. You just have to live with the some guys maybe looking down their noses at your 'inferior; engine'. 4 strokes are good - I have a YS, lots of power, $$$ - but you don't NEED one to 3d and surely not to get started. A Super tigre 46 engine for example costs less than some of the parts on a Saito, and it isn't too hard to break an engine learning new stuff. Try to get an engine that has a reliable transition across the power band.

I would set the planes you have aside for a while, build a profile kit (takes 2 weeks some say, I need more) and fly for a bit. Pick up the other planes when you get bored or competent whichever comes first.