in one of the magazine reviews this plane(RV-4) was found to have some defective wood, quite a bit actually that needed replacing. as a beginner you might not recognize that until too late. .Id second the idea of a Skytiger or Four Star kit or ugly stick. save the beauty queens for later. you just need something to build time on. possibly two back ups as you'll have spares&you cant have too many planes especially when starting out. difference between 45&46 engine for all intensive purposes is minimal& there is some advertising hype there too.