I would normally endorse the suggestions for a 3 or 5 speed internally geared hub, but since you say...
dont try to convince me out of it, i wanna see if it'll work hahah.
I'll say no problem, go for it! I don't see why that Origin 8 hanger thingie shouldn't work. Almost any old freewheel hub can be respaced to the correct width. I don't think it has to be a solid axle.