I'm considering purchasing a Kitfox 1 kit. I've done a fair amount of reading on the first KF and it sounds like the main downside is the lack of authority in the flight controls. The kit I am looking at includes Kitfox IV wings, wing fuel tanks, full length flaperons, and Kitfox IV rudder and elevator. Would this drastically improve the kitfox 1 or would it cause some problems possibly?

Thanks.