Most of the world wants their boat May 15. Pick another date and negotiate a better price. Location as well as timing, can trim prices. Surprisingly, a boat show can be a good place to place an order, if you sense a motivated builder or dealer. There has to be a reason for the existence of still one more sailboat.
Sailboats have a lot in common.
So, it is what makes them different that should be your focus. Play with the features. Or, go to a reviewer of the boat, like Practical Sailor, who may have been able to do what you cannot get around to doing. But you should have an exit poll working. Models that have short lives before their builder has a replacement model out, plummet in resale pricing.