Thanks for the sage wisdom!
Checking my owner's manual, I note that the MB specification calls for a 0.80mm gap. SCOTTFISH, is there any significance to the Bosch plugs' "stock gap" of 0.32mm, or did you mention it only to indicate that adjustment would be necessary (to meet the 0.80mm spec)?
Also, I found some good info on the Service CD's (I always forget how useful these discs are... You just have to keep hunting through the myriad menus 'til you find what you're looking for.) Anyway, therein it states that the new plugs should be torqued to 25-30 NM.
Good generic advice about the distributor cap, rotor, and wires. However, in my case, I had this done about 18 months ago, so I'll wait awhile longer before biting the bullet on these parts.
Thanks again; I think I'm "good to go" now!