Wow, 22oz/sq in! Are you sure you even want to try flying it?

I just took my 25FSR off a 3.4 lb plane with a 437 sq inch wing (17oz/sq foot). Nothing wrong with the engine, the plane is my testbed for new aquisitions. It's temporarily got a OS 32FSR. With the 25 FSR, I used a 9x5 Master Airscrew (MAS) prop. The plane is a taildragger with small (<2") wheels. Performace was great, no problem with takeoffs from grass. For yours, I think the 10x4 is the best prop to start with, but you might also try the 9x5. I think the 9x6 might not let the RPMs get high enough.

I've seen some discussions about the relative efficiency of MAS versus APC props. Last I recall, it was not clear that APC actually were more efficient. There were some comments that the narrow tips of the APC props let the engine develop a few more RPMs, leading people to think that they were more efficient, but that the actual thrust might be a bit lower. I think it boils down to personal preference. I use both. I like the look of the APC, but I think the flat tips on the MAS are a bit more durable, and not so sharp.

Your wheels should be ok, but if your field is rough, or the grass is long, do as has been suggested, go to a light 3" wheel. Be sure to give the plane plenty of time to get up to flying speed before trying to take off. If you can, adjust the attitude of the plane so it sits slightly nose DOWN. If you can't adjust the height of the landing gear, use a smaller nose wheel. This will help keep the plane on the ground until you actually give it up elevator. It will also help it stay down when you land it a little too fast.