Here are the pics of my Dolphin with the Dubro Super Strength landing gear. I painted the gear white, and drilled out successively larger holes down the sides to reduce the weight.
2 nylon bolts in the gear have been holding up VERY well. Also have some extra holes drilled out of the mounting plate, which at first were by accident, but now act as weight reducing holes. I've had some hard landings after some weird radio interference, and it doesn't phase the gear.

I know we were talking about changing the wheels. I would keep with foam wheels as they are lighter. 2.5" from my Nexstar have been working very well for me on the short grass runway, but I could see using 2.75 or even 3" just for looks, mostly because of the beefed up gear. Also my tail wheel has been fine, but again I could see going to the next size.

I think I have extra prop clearance with the new gear. Doesn't look bad though. I've been using a master airscrew 11x5. It jumps off the line, and I definitely have to kill the throttle in a climb before it's uncomfortably too high. I'm not sure about turning a 12" prop with the 46AX - I've been advised not to bother due to very noticeable loss of RPM by many people.

This thing is a blast! I've already banged it up a little, so it now has a black canopy and an extra sticker or two, but still looks and flies great. I did my first two knife edges today. Have to keep the speed up, but it does them VERY well. I balanced my CG based on inverted flight characteristics, to where I need about 1/4 to 1/3 down elevator to keep it flying level while inverted. Very easy to fly the pattern inverted with this plane. Rolls are very smooth, not too slow (definitely not blazing fast) and loops are plenty tight now that I've got the rudder trimmed properly.

The only thing I have to work on is speed control - I'm apparently landing pretty darn hot according to the club instructors. They flew it and said there's not much transition between idle and faster speed. I think it might just need getting used to the lower flying weight than the Nexstar. One or Two clicks above idle might be all I need to land this plane, but I've been trying to land closer to 1/4 throttle, just because I thought that's what landing under power meant, and what you are supposed to do. Because of this, there is a tendency for the plane to balloon when it gets near the runway, due to the 'ground effect' I'm told, and because I'm flying in too fast. Practice, practice, practice.

This plane is fun, I love it sooooooo much

Also, you can see behind my plane the tall grass I accidentally landed in last week. Doesn't look to harmful but it was enough to split the plane into 2 pieces!