Project complete.* FYI for the group:
The thru-hull is forward of the head.* The hose runs through dead space.* The inability to pull the hose through was because it was cable tied to wiring runs in three places.* To cut the ties, I had to install a 4" deck plate adjacent to the head and a 7"x 9" access hatch on the step up adjacent to the forward berth.
The thru-hull is shared with the macerator.* Replaced the T fitting with* Y valve.* Because of debris in the raw water line, added an in=line strainer.
All-in-all, a PIA job.