The crayford is a real bonus and worth the $100 extra on its own without the larger mirror, etc. Be careful before buying a 12" because it is like a water heater so have a look at one before purchasing.
If you can store, handle and transport the 12" then its the go.
As for Jupiter you will see an amazing amount of extra detail in either scope. I can make out festoons and the larger spots in my 8" and the 12" will blow the boots off it.
Get ready for some amazing views
