First PWC, 04 GTX 185 limited

I have had a SeaRay boat for awhile now but just purchased my first pwc 2 days ago. Fairly clean 04 GTX 185 supercharged, ran great when I test drove it but to be safe I pulled the SC and sent it to PWC muscle as soon as I got it home. Will probably change the oil and plugs next.
What else to I need to inspect or replace to make sure it’s reliable?
Any must haves tools or spare parts I should keep on me while on the water?

You can check the jet pump, pull it and maybe change the grease in the cone. Inspect the wear ring.

I’d just follow the maintenance manual: