Nice thread Keith thanks.
DMcD, Is this a 500/550? Can you provide a link to your build thread, I must be blind. I use the same bracket in the rear & the front is the same idea. My lower fairing is longer underneath (within 3" of the rear wheel) so I use a bracket on one side to stabilize and center the rear. Most use exactly the same brackets as you're planning and that's fine.
This from a distance but you can see the rear bracket plus the short one from the bottom engine hanger bolt.