It's hard to be patient once you catch a bad case of aluminitus, but you will be rewarded for taking your time and waiting to get the right trailer for your needs. A few more major considerations:
- are you able to handle (skills, tools, and TIME) minor and major repairs and renovations? If so, your first trailer may be the one you "learn Airstream" on. It's incredibly fun in a really painful and exhausting kind of way *(that doesn't sound good, does it?).... If not, you'll be better off finding a REALLY tight trailer that needs little or no work and being near a really good dealer/repair shop that already knows Airstream (don't assume every RV shop does).
- take the time here on the forums to really learn the systems that interact in your trailer: from running gear to plumbing, 12/120 volt electric to buck vs. Olympic rivets.. man, what an education! this forum is amazing! The better you know how the systems work, what distinguishes a good component from a bad one, the more prepared you'll be to make a wise purchase..
- there's also a lot to learn about tow vehicles. I was lucky enough to buy a complete trailer/Tundra package that already had all the good extras you'll need to tow: brake controller, hitch, sway bars, etc. I personally think my 2001 access cab Tundra is one of the best tow vehicles on the road and plan on keeping it at least another 10 years and towing the whole time...
Like the Rod Bernard song (almost) says: "this could go on forever".... but you've got the bug...now the fun begins! good luck