Don't worry too much. I know Tom's truck was standard last year when he went and he was able to do everything.
Not sure how easy fitting new coils is on a B, but I know that you can run an A series with a 2" lift on standard shocks for a while. You still have the lift just not as much travel
If it's the same on a B then I'd fit the coils and do the shocks after the weekend (but before the annual meet

)