Welcome to the site! Great looking machine! More and more yellow boats coming on here, lol, I don't feel so alone. You're going to find many answers here, as I have. You made the first rule, post pics, something I, on the other hand, just figured out how to do! (Shhhhh, GT, or I'll post them all upside down, lol
There's probably somewhere close to 200 years or so of collective experience with all aspects of these boats. Surf the threads, and ask questions.
What you have sounds pretty quick actually, but more is going to depend on what engine and jet drive you are using, upgrades, etc. The crew here will help you out! Just need more info. Can ALWAYS be faster, just a matter of cost VS gain.
Look forward to more pics!
Ray