Start with the grips of the mirrors if you're going for visual impact (they'll be noticed faster than pegs or a layback plate).
Note that the grips you're looking at are really comfortable compared to the OEM grips. Also note that those mirrors (and most other decorative mirrors) don't off the same view as the OEM mirrors so you may also have to get offsets.
Retired USAF, IYAAYAS!
2008 V-Star 1100 Custom Bobber project
2011 Crimson XR with Forged Highway Bars / Hard Bags / Passenger Backrest, Ness parts including Smooth Layback Plate Frame/Mount / Rad 3 Mirror / deep cut grips / drivers floorboards /shifter peg / brake peg / passenger pegs. Witchdoctor black rack, Lloydz filter / timing wheel / VFC III, 7Jurock windshield, Drag Specialties seat.