Where can I find a 3/8" or 1/4" drive torque wrench that can do 16 inch pounds for the spindle nut? Looking to pay under $50. The craftsman one will only do 25-250 inch pounds.

Hand tight with the socket is plenty close enough.
Exactly. No ratchet/torque wrench needed here. Grab the hub nut socket with your hand a give it a twist. No end play in the bearings? Good enough. It's not rocket science.