A few general maintenance questions

Hey guys,
My 06 prius is about to hit the 103k mark. Unfortunately at about 90k i had a water pump leak and had to get it replaced alongside with the engine coolant. So I have a list as follows of maintenance to do's and some questions with it...:

1. Inverter coolant - will do this at the Dealer probably, unless this is generally a not too bad maintenence item, i've only ever drain and filled coolant on another car ever once...how are others experiences doing this?
2. Oil Change / tire rotation - I may just have a cheapo 20 dollar shop do this, not due to the oil change, but because I feel too lazy to do the tire rotation haha...
3. Spark plugs -- i've done these a few times before, but what plugs do you guys recommend? I've never anti seized or gapped plugs before and would prefer not to do either!
4. PCV valve/ throttle body cleaning...these should be an easy combine with the spark plug right?

Thank you all for the assistance?


Edit: I've also meant to post this in the gen 2 forum...not gen 3!

If a mod can move this thread (or show me how to), I would greatly appreciate it!

 

Thank you bud! Do the OEM ones require applying anti seize?

 

Just did that one at the dealer with the serpentine belt. Seemed like a good idea. Belt was almost destroyed!