Since you have already gotten many replies on doing what you wish I shall only add one thing for your.consideration. You mentioned that the new gear will cause you to have a very nose down attitude and where advised to just change the wheel sizes. Good idea, one thing that's good about a nose down attitude, but only a slight amount, is it will tend to prevent bouncing on landings to a large degree. We used to do this deliberatly in the old days of AMA pattern. It will require a bit more up elevator on take off but no problem.