Phil wood Makes a very good Freewheel HUB.. I Used a 48 spoke hub of theirs for my Loaded Touring Rig..

they also would sell 36 hole of course .. The Axle is very strong .. the vulnerability of low end Freewheel hubs is they just have a 10mm threaded Axle
and leverage on the drive end because it sticks out past the Hub end bearing Quite a ways.

Phil makes their parts in California, in their own shop. , so not cheap, but they will provide lifetime service, they can replace all bearings , and such.. if ever needed