Hi Andrew,
Levels of paddlers vary from year to year but you should have a decent roll. You will spend most of your time at Baby face, push button and Garb ( though water levels might be a bit higher this year, could be having fun on Dragon's tongue as well!).
If you've got your roll in big water, you're good to go. I had never been on Garb before Keeners and could barely front surf. By the end, I could spin on Garb and didn't want to get off...
Manny
P.s. Hope you can make it to M.A.C.K.Fest!