http://texasrcplanes.com/arftr.html
55 bucks for a 63" wingspan balsa trainer.. you can't beat that.. that website has a lot of good planes but this would be the plane you need.. then go to the marketplace on here (rcuniverse.com) and buy you a .46 size engine and then your radio gear, which i am sure you have an idea of where to get that stuff if you have been flying heli's.. that plane on the site i linked you to will come with everything else (hardware that is, fuel tank and tubing, engine mount, landing gear etc.) so all you need is an engine radio gear, receiver battery, and all your field equipment and you will be ready to head to your local field and find an instructor.. don't try to go it alone like i did, it can be very disheartening after about 12 bad crashes you will be ready to give up like i almost did!