JanetC,

Follow your heart, build what you want, and you can put a 1,2, or 3-4 channel radio in just about anything. Go with the Convertable for now, as you planned.
There are several "old timer" designs, altered for R/C. Pick up an issue of "Flying Models" magazine, or "Model Airplane News" they generally have all kinds of these planes advertised.
You said it there too, "gosh I want to build them all, it seem like, I wish I had the time."
You DO have the time- the rest of your life.

Jetts