ROCKFISH-
Try the Morning Hatch in Tacoma if you dont mind driving south.

You want to find the Rio MonoCore Shooting Line in the Aqualux. This may be hard to find so just have a shop special order it for you. Next pick up a Cortalnd 444 Intermediate #6 (the blue line-normally I would suggest going atleast one line size above your shooting head size but with the very long body-22', that is not necassary) and cut it 22' back. Splice the 22' of the Cortalnd Intermediate into the Rio Shooting Line by the tip.
Place a loop in the rear on the Cortalnd to loop in your tips.
Pick up the Rio Aqualux, type 3 and type 6 heads in a #6. Now you have that Rio 15' Striper Versi-tip in a #6.

Depending upon your rod, you should have no problem casting this setup...sounds like alot of work and it is. You migh be better off buying the #7 and dealing with an overloaded rod.