Find out from the dealer what you have. If you haven't run it yet, ask them to swap it out now. I think the ACME 1433 is the upgrade from the factory and what I run with the 345 on my Mojo.
Ballast is easy (to start :) ) with plug & play from stock to 750's or 1,100's.
For surfing, look into a Phase 5 Scamp for the kids and Model X for you.
Other than that, I think you're set to have some fun!