Hey Dennis...
Sounds like you're on the right track. Triumph do a "king and queen" seat for these bikes - you don't see it often but I had one in my hands for a while that I sold off. Looks really good for two-up riding. The dealers call it a "dual touring seat" or some such thing.
And yes, even tho I'm a chrome-aholic, that pic makes me soil myself too

Wonder if I can afford the tba AND a speedy.

Matt