Now way it's idling at 200rpm, so maybe some tach. inaccuracy is to blame there. As for the oil in the plug wells, if it was my car (I'm lucky to have a VTEC-equipped model so it's not an issue) I would probably try a seal conditioner of some sort to see if it helped, as I wouldn't want to go to the trouble of replacing those either unless you have no choice - although replacing them really would be the best solution possible if you had the time/money. If it was due for a timing belt replacement, I'd have them add those donuts/o-rings to the menu.