Bendix is still the best hub. Long out of production, still plentiful. Try ebay and keep an eye on the alley. Ten years ago there was an infinite supply in the alley. Even better is Morrow or Mattatuck, those are long in the tooth but show up. The Shimano hub is very basic, does not inspire confidence. It's nice to have confidence in your brake.

Coaster hubs on Schwinn were effective because you sat directly over the rear hub and sitting upright it was automatic to give the pedal some force. On most all other builds you need a caliper front as well.