Congrats on the new RAM.
I never seen anybody respond to your question about how long it takes to get a camper. That is something only a dealer well have any idea of. AF builds in groups of ten campers at one time. This means they would build 10 990s, then maybe 10 1150s, then 1140s. So you can see it all depends where they are in their build cycles. Now if they are just starting into a cycle on the 990s and some are just for dealer stock they may put your name on it and build it the way you want it.
Also I would check with Apache as they are a big dealership with numerous dealership and they might have just what you are looking for. I agree with Gripnriprod, buy it at a dealer in WA and then take a trip down to pick it up. Probably have better luck and get a nice vacation out of it. One fellow on here bought an AF and had it shipped to AK and it got some pretty heavy damage on it. If I recall the dealer reordered him a new camper but then he had to wait again for the camper.
ON EDIT: I also just noticed you are a new member, welcome to the forum.