Three good plugs for any 2.5L and '99 and older 4.0L engines include the 100k mile platinum Autolite AP985 or Champion 3034 plugs. Or the 200k mile iridium tipped Autolite XP985.
When replacing your distributor cap & rotor, try to find with brass contacts. Cheaper caps & rotors have aluminum contacts which don't last as long.
For ignition wiring, too many aftermarket wiring sets are shoddily made/fall apart when replacing plugs. Also, many cause lots of spark/ignition noise (static). This is one of those parts I only recommend the factory replacement for. Especially avoid those so-called "low resistance" wiring sets. While 'low resistance' sounds good, that is a misleading term that doesn't work the way it sounds like it would. Resistance is actually added at extra cost to ignition wiring to eliminate static & interference to the engine computer. Due to how electricity flows (Ohm's Law & all that), the added resistance does not really reduce the spark voltage in a significant manner.
Finally, your engine doesn't require anything special on oil...just regular oil & filter changes will keep it happy & healthy. 5W-30 or 10W-30 is all you need. While I prefer synthetic lubes in my transmission, power steering, & transfer case, I run/prefer conventional lubes in my engine & axles.