My own Butterfly has been flying on an old OS.26fs for many many years. She spends most of her time just barely above idle - 4 ounce tank gives me hour-long flights. I fly from grass exclusively - she's always had trike gear with 2.75" wheels, outstanding in the rough stuff.
All my planes are still glow. Shoot, all my planes are still 72MHz. However, if you've already gotten rid of your glow equipment you'd probably be better off going electric on the Butterfly - modern support would be great, I'm sure.
