I've replaced the choke on all 3 of my Seadoo's and replaced with a primer.
Some people have had great luck with the choke, I had issues with my first one, and then after that said fug it and switched to primer. For all I know the issues were a bad choke to begin with, I can't remember back that far.
A primer kit is reasonable, I think the kits at the dealer were like $22. (everywhere else it was more expensive oddly enough)
I guess the question would be.... What are your starting issues ?