You’ll get whatever the build of the model you order is at the time of build ( assuming it isn’t already in country and available etc). Sometimes spec goes up, sometimes one or two items get removed. You shouldn’t be asked for a deposit ( though if you’re putting optional extras on you may be asked in regard to those, I’ve never added extras so not sure). You can also ask the dealer if they’ll honour the lower AP in the event it goes down, they’re usually happy to do so.