Great bike. Glad you are taking it. I think those panniers are the narrow "city" cases - pretty rare. The lighting was added, I strongly suspect.
My R100T had a windjammer on it when I got it. Removing it was the first thing I did. No regrets.
Check out www.northwoodsairheads.com
for basic tools and parts. Jeff Trapp is an inmate here. I got the exhaust nut wrench from him as well as other bits like head gaskets, etc.
Keep us posted on your progress.