If you want some really nice wheels, although they are heavy, get in touch with Darryl at Sierra Retracts.

I just got a set of 5" ones from him that are really really nice and pretty close to what they should look like.
Nice big wheel,low profile tire, 8 splines in the wheel.
4.75" would have been perfect but he doesn't make them that size.The Robart tire that's on them is nice and firm too
so should help to keep from getting bouncy landings which this airframe will only take so much of. They were $125
for the set.Below is a pic of them.

He also makes a set of truly scale articulating retracts that if utilized would mean a bit less cutting of the fuselage
since they draw back into the wing when retracting.I don't have them so have no idea what the cost is.