If it weren’t for the COVID supply chain problems, I would suggest a square taper Sugino triple like the xd 600.
That is what comes stock on the LHT. I have run mine 22-36-chain guard with 10 speed 105 brifters and 26-36-46 with bar ends. I can spin pretty fast, so I top out around 28mph with the current 36-11 high gear.