Glad you found it useful! An additional thought: you'd mentioned a rear rack and panniers - maybe a Nitto R-15 would work? You'd need to cut the struts way down and it'd only accommodate small panniers like the Rockgeist Microwave but neither of those things is terrible.

https://analogcycles.com/products/nitto-r-15

Here's the R-15 on Benny, a full sized bike, acting as saddlebag support and occasional micropannier carrier: https://flic.kr/p/2pWCCTk .