That's exactly it. If you can handle lugging the 12 around, get the 12.
The crayford would also be a very worthwhile addition but that's something you could add-on later.
Even I managed to carry out that modification and I'm not the "handiest" bloke in the world.
The price difference for the deluxe 12 isn't really that enormous. Can it wait a few more weeks until you've saved a few more pennies?
The really good news is you can't lose whatever your final decision. Either scope is going to make your viewing a pleasure.