Another recommendation for Lang...just about a 2 hour drive for you. The wait time should be super quick and likely less than a month. I spoke to them a few years ago when I was looking for cookers and they were very nice, quick to respond, and they have been RF smokers for a LONG time.
Depending on what you plan on cooking I would personally expand that budget (just a bit, even if you have to wait a couple of months) and go with the base model Lang 60" trailer. That's a solid workhorse of a cooker and it gives you enough cook space to do whole animals; pigs, lambs, goats, etc.. I would not recommend going with the Deluxe model because that warming box is pretty tiny for what you're getting. I'm also personally not a big fan of the attached grills on offset smokers because they usually don't perform as well as something like a Weber Kettle.
Good luck moving forward and I think you'll be very happy with Lang. Shirley Fabrications makes some amazing stuff, but that waiting list is brutally long.