I'm not surprised you're not a fan of the 5th Avenue acoustic tone as it comes from the factory -
neither was I when I first bought mine; unless you're playing strictly Gypsy jazz ditch the light-gauge strings in favor of 13's (or heavier - I'm using PB 14's on my acoustic, flatwound 13's on my CW II) - you'll notice a major improvement in both tone and volume, and I've (actually, one of my former students) used mine in front of a mic with excellent results...
B.B.:
If you're doing Travis picking/playing up the neck, in the grand scheme your needs might be better served with the twin P-90/single-cut CW II. While it's first and foremost a traditional jazz/blues/roots/rockabilly box in the mold of the early-50's ES-175D - meaning it's not exactly a first choice for miking - you
can get a passable acoustic tone (similar to a dread/small-jumbo with a magnetic pickup) with a set of roundwound or (better still IME) half-round 13's and some careful EQ tweaking at the amp (FWIW I'd only use a dedicated electric-guitar amp - preferably with as few bells-&-whistles as possible - with this one)...
Finally, given your age (hey, I'm 63 myself) and tastes in music, I'm kinda surprised Gretsch isn't on your radar - a big mistake IMO, since their present MIK Electromatic 5400/5600 Series are some of the highest-quality, finest-playing/sounding instruments they've
ever made; FYI I'm an ex-Brooklyn boy who grew up on Gretsch - I was a fan long before the Beatles arrived, my grandparents lived three blocks from the old 60 Broadway plant, I still have the copy of the '63 catalog (and the '64 Double Annie) I got as a kid in my collection, I've probably played a few hundred originals over the last 55 years, and I bought a new 5622T-CB last May - so this is not a statement/judgement I make lightly. In addition to "That Great Gretsch Sound," nothing else looks like a Gretsch - and if you've ever had a jones for a mid-60's Tennesseean, Nashville, Country Gent, or White Falcon, you can scratch the itch without it costing an arm, a leg, and a couple other valuable appendages
:
https://www.sweetwater.com/store/detail/G5420TORNG
https://www.sweetwater.com/store/detail/G5622TVO
https://www.sweetwater.com/store/detail/G5422TGWS
https://www.sweetwater.com/store/detail/G5422TGSNWH