you can use Yamaha FJR pegs in the lowering brackets but I believe there needs to be another washer installed.
http://www.motorcyclelarry.com/index.php?main_page=product_info&cPath=46_59&products_id=158Sometimes you have to choose form or function, and with the unhappy GF you may want to choose function unless you want to ride solo.
I am going with a similar setup I previously used. I am using the shorter 360 adjustable 23 mm shorter arms with these boards
This is the setup I had before, 50mm silver arms. This seat was a Mayer, pretty good but room for improvement.
As an example, I just had this hybrid Russell Day Long made for my wife but I kept the front close to stock.