You may want to Contact ET wheels and see if they will custom drill you a set of their AC-III bolt on wheels.
ET Wheels by Team III Wheels
They do sell caps for your PSE wheels.
ET Wheels by Team III Wheels
(The links above are to different web pages)
Another option would be to upgrade your hubs and brake rotors to a 5 lug in front and New axles and rotors in the rear.