1. The fact that the builder is telling you the inspection would be a waste makes my skin crawl. I’d hire an inspector ASAP & force the builder to remedy anything the inspector finds. Get a GOOD inspector & tell him/her you want **every detail** checked out.
2. RE: financing… Either the builder has a pre-payment penalty in there (ask a lawyer to review docs!!!) OR they are charging you mega bucks on points (front or back end). Find out EXACTLY what they are charging you — ask about total compensation (front & back end points) — tell them to disclose EVERYTHING. Are you using their lender because that’s the only way to get certain incentives? If so, tell them you demand the same incentives, but will use your own lender (if they are trying to rip you off).
Remember that YOU are in the driver’s seat on this deal & always be prepared to walk away if things don’t go exactly as you request. Best thing to do is not get emotional when dealing with big purchases. There will be plenty of better and cheaper homes to buy over the next few years.