Numbers is a huge step up from the Moab Daily.... I will SUP the daily, but not Numbers. Honestly, the difficulty of the Daily is comparable to Rincon on the Ark...class II. Numbers is class IV. My suggestion would be to run Browns or Parkdale first, and don't go into Numbers unless you style those.
Not to mention you will probably have high water on those dates, making Numbers a solid IV+ run. It's important for you to remember that commercial rafters stop running Numbers at 2400 cfs...