Ha Haaa, you in the wrong decade. Should have done this about 9, 10 years ago, the last decade. In this one came the invasion of ARFs and you would be hard press to find what you looking for. How ever there are a few places where you can find some short kits in which you only get mainly bulk heads and ribs, you supply your own wood sheeting, hardware and glass or plastic parts this would put you in the price range you are looking for, kind of. There are places that still sell very good kits but not in your price range because the price of wood has gone up a lot. More like $300 and up for full kits. Some of those you have to supply your own hardware all you get is the wood and maybe cowl and canopy, MAYBE.. You have to hunt the web for a kit deal and hope all the parts come with it. I understand your price range and think your best choice is to do a scratch build from a short kit. The up front out lay of cash is small and you get your other parts a bit at a time. That is what I do for my giant scale birds that is close to 1k or more when finish. It is done a little at a time.
An intermediate warbird would be one with out retracts, I would go that route. Like a VAL, PT 19, Stukas are not bad and many others.
Check this site out so you can get some ideas of what is out there in short or full kit form. Get back to us as to which warbird you are more leaning towards because they are so many out there it would be good to narrow it down a bit, that way we could better help you.


http://www.bhplans.com/BTPlansPg4.html
http://www.warbirdkits.com/kits.html