Did the same thing for my bike, except I used bags that were made for my old Sportser. Paid $650 for those bags and couln't see paying again when they were almost like new. Made the brackets myself and had someone else do the welding.
I used 'bagger tail'. Made it an easy job. I have made brackets in the past. Depending the look you want the brackets can even be bolted together from flat iron from Lowes.