Here's a small Santana Fusion (26" wheels) that should fit, and at a good price.
https://neworleans.craigslist.org/bik/d/santana-fusion-tandem/6283831293.html
It's in Biloxi MS. You would need to switch to drop bars and shifters but you would have a quality bike/frame worth a few upgrades.
Tailwinds,
Charlie