I did something similar yesterday, but I did not use peg extenders. I got the Kuryakyn #7996 offset mount, and the Kuryakyn peg #8000. And I used the bracket from Wild Bill, but got it powder coated by Garauld. The bracket looks great and blends in very well. The chrome, however, on the Kuryakyn hardware sorta stands out, but it's ok.
I have carbon fiber armor over the stator, and had to use a Dremel tool to carve out some room in the carbon fiber for one of the bolts to mount the Wild Bill bracket. If you look close, you can see it on the bottom photo.... the middle bolt.
Also, the Kuryakyn offset mount has a 1/2" bolt, so I had to enlarge the 3/8" hole in Wild Bill's bracket.
I just installed everything yesterday, and went for a short test ride. With the offset mounts (which can be rotated 360 degrees) in the forward position, my legs hit the tupperwear, but it's not too bad. I will try different positions for the offset mount and see what configuration works best.
I'm not sure if the oil filter can still be removed with this Wild Bill bracket in place. Anyone know?