I'd probably pop the belt off and make sure all everything is free (tensioner, idler, and accessories). I'd hate to have something seize up completely when going down the road.
Also, it's nice to have a temp gun for looking at a possible hanging caliper. Just shoot each one and see what the temp differences are. Then you don't have to touch anything, and you get a quick reading. A cheap harbor freight one would do the job.
Also, has the timing belt been serviced? I'd also take a peek in there and make sure everything is kosher.