Congrats!
After several years, I sold mine on to a gent in Sweden. I really like the necks on these and the finish is lovely. I felt lukewarm about everything else!
The electronics are nothing special. The JP hardware (especially the vibrato) isn't up to par with the American stuff. The pickguard is a funky color of gold that is unique to the JP JMs. I also grew to dislike TOM bridges due to their non-conformity with the neck radius. My current Framus Strato suffers this and I'm selling that one off too. The JPJMJMs' potentiometer are also very light to the touch.
Still, I really liked the guitar and was very hesitant to sell it. It was too rare and pretty to take to gigs and the sounds that came from it are readily available elsewhere in my arsenal. Mine did take to a good setup rather well and was solid in that regard.
If you are angling toward turning it into a 'better' JM, then I'd swap out the pickups for something that you like as a first and primary measure. Gut it and keep the guard. I do believe that the JP guards have different screw holes than the other units. I can't verify that at the moment though. It is something to check into.
Next would be the vibrato and bridge unit.