" Is there another plane that would have longer legs than a straight trainer that may be a bit easier than the UCD? "

I would suggest a 4 Star or a Tiger II as a very good alternative to the UCD.

They will not do 3D, however they are the frequent choice for a 2nd plane. They are aerobatic, low wing and land at more of a trainer's speed (The Tiger II lands faster than the 4* and can be set up for tricycle gear or as a tail dragger ).

Either of these planes is also more durable in the event of a harder than usual landing. The UCD MUST be landed gently or there is a very high probability you will have fuselage damage/breakage just in back of the trailing edge.