Since you are from the paintball side, you probably have dealt with Badlands Paintball in New Westminster. They have several big sales each year on their paintball markers and airsoft guns.
Also if you are leaving paintball completely, selling your equipment and markers on a BST could easily fund your airsoft gun. Or sell it to Badlands, they do buy used markers.
http://www.badlandspaintball.com/We-..._ep_104-1.html