Big howdy
and welcome to iRV2.
Large or small, the dealer has to want to sell a coach. As a starting point, I'd go in at 30% off MSRP and work from there. If you go in too high, they will sure take the offer. Better to start low and get them down. You can always come up.
Main thing to remember is that you are the buyer and it is your money. They want your money.
Do not let them see the star-dazzled look in your eyes. Be prepared to walk if they won't deal with you or if you get the slightest uneasy feeling about the dealer.
If you get to a contract point, make sure that EVERYTHING the dealer has promised is in writing in the contract. If it is not in writing, it is soon forgotten.
Make sure that the dealer knows that you expect a through walk-thru and demonstration of all items and systems. Do not accept the coach at delivery time or hand over the money unless it is 100% right. Once they have your money you loose the upper hand. Just leave it a the dealer and go back when it is 100% and no problems.
Have fun shopping.
Ken