If your engine can turn an APC 12x4 or 12.25x.75 12-13k RPM you should be able to hover either. The airframe will come down to preference, really. Build them light and you'll be good to go. You won't have much in the way of pull out, but it should be tolerable. The UCD will probably be marginally easier to hover and will be generally 'friendlier' to learn on. However, the Funtana will ultimately make you a better pilot IMO (provided it survives the learning process).