Alfred E. Bikes has a good price on that hub, too. Thanks for turning me on to it. I'm still not sure that's how I'll go, but it's looking like an affordable option at least. I've been hoping to upgrade to an 8 speed at some point, but there are no 8 speeds with a coaster brake that will fit my rear spacing.
I don't want to drop money on two hubs for this thing, so now I need to figure out if I want to go 3-speed with a coaster brake or 8-speed with only front brakes.