Hi ladyice, how is everything going?
It seems you and I have very similar tastes when it comes to houses. We've got Nava as one of our proposed builders, have gotten a quote from them but they're probably our 3rd preferred builder. I wasn't too impressed with their detailed quote (the sales person, even for me as a complete amateur, wasn't very accurate quoting) plus they were a lot pushier than other builders (asking if we were ready to sign a contract very early on).
Have you started the ball rolling yet? It does speed things along if you visit their display and start talking then and there, as opposed to ringing them. Cheers!