Re: Reel Idea...
A Solitude 4 would also fit the bill, but maybe taking it all the way to a 9 might be tough. Solitude have a "mid arbor" and a "large arbor" spool for their reels.
I've got a Solitude 5, which is supposed to be a 9 to 11, but amongst today's true large arbor reels, their offering really only reduces the line capacity of their reels. It doesn't make the spool large enough to be a proper large arbor reel.
I would really call the Solitude 5 a 7-9 weight reel with a large capacity of backing when the mid arbor spool is fitted. Fit the large arbour, and you could run it down to 5 wt if you wanted to, but it might be a little heavy on a 4 weight rod …