Ok. I'm finding that I can still use my servos with a 6V battery, my receiver will be fine, so all I need is an engine and a plane. Will devise a plan to fit a bigger/full size plane, and will look into 120 AX or a 110 YS.
Definitely going to work on getting a plane over the winter; student loans (Sept. and Jan) and birthday and Christmas should about cover it.
Thanks to all you guys for putting up with my squirrilyness. I went back to the Dolphin today and had a blast with it. It is totally capable of flying sportsmans and has plenty to offer and teach me. I don't know where I lost the motivation to fly it, but I found it again. I think I got distracted with the Decathlon, so that's now a project for a rainy day or week or whatever; time to get serious with practicing for Jackson!!!