I'm sure you are aware of this, Polaris sells the fixed glass windshield w/wo the wiper mount in the windshield, you do not have to purchase the wiper, but with the wiper ready version, you would be ready if you decided to install the wiper.
I would try selling the fixed glass, purchase the Polaris tipout, and purchase the Polaris wiper accessory from Rocky Mountain ATV, they have the cheapest price.