Acura recommends your timing belt at 7years or 105k miles which ever comes 1st. They also recommend a valve clearance inspection/adjustment. The 105k service itself is separate and includes spark plug replacement. I would do them in that order of importance.
The 105K service is for an Oil Change and Spark Plug replacement. Make sure your Timing Belt has been replaced, as it was due @ 60,000 and again @ 120,000. Also, major fluids like Transmission and Differencials were due @ 90,000.