Just having the Cogent on the bike raises the rear some,just like the people at Cogent said it would.Since you like to corner, raise the rear 1 to 1-1/4". Makes the bike feel like its 100#'s lighter. No stability issues at all - the Bandit has very conservative steering geometry.
If I raised it 1" or 1 and 1/4 I would be looking at re-doing the centerstand and kickstand.