The ultimate setup if you have not bought a motor yet would be either a Saito .82 or OS .55AX and any of the .40 size profiles from OMP.

A lot of people don't realize just how easy and quickly a Mojo or other Swany planes build-most can have them ready to fly in one week of evenings. The one bennefit of kit building is you normally have extra covering etc. that you can patch with and also having the knowledge/plans if you should ever have to make structural repairs.