That looks pretty good!
Test something though.. open the swing-arm now that the tires mounted and swing it out a few degrees.. past the part it sits on when closed and take a picture. Want to see if the swing-arm is bends under the weight of the tire.. the thing I don't like about a single-shear style mount like that one is that all of the weight is on a single point.. as opposed to a double-shear like shrock's
Also, do you have any pics of what inside of the bumper looks like? Supports, bracing, etc