If you start with a new high quality chain and sprockets this would be a non-issue for 11-12k miles. Just give it a spritz of the teflon twice a day. I put a new C&S on my Tiger and went on an 8k ride soon after with my fat ass and a heavily loaded bike. No chain adjustment needed the entire trip. Several 7-800 mile days, mountains, rain, high speed desert runs on 100+ degree days. No issues. No it wasn't the IB by any means but 12k is not going to affect a good chain.
As far as the IBR, the previous posters know far more than I. Heed the advice, learn, and if you chose, give it a go! I would love to see/hear the evolution of your attempt.
"...when I handed the 40 ouncer to him, he got that far off stare that a cat gets when it just gets done licking its ass for the last 15". Yeah, THAT stare." -WTF-Over
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