From one novacastrian to another,
Go with what you can afford naturally, but watch the dis boards , Disney sites like a hawk for specials. Our 3 trips ( WDW once, dlr twice ) have always yielded a 30-40% off room rate special. Just be prepared to book quickly and not procrastinate in lieu of missing out as once those specials start they do sell quickly.
When we went to WDW we wanted to be next to the magic kingdom so looked at wilderness,Polynesian and grand Floridian .
Wilderness is beautiful, poly is ok, Floridian looked sensational and we didn't regret staying there at all. Wilderness would have been my next pick....