Here are links to the fittings I ordered for this project... I didn't really like what was available in the plumbing section of the hardware store.
Stainless Hex plug
https://www.grainger.com/product/GRA...x-Socket-4WPK4
Brass beaded hose barb
https://www.grainger.com/product/GRA...arb-with-6AFJ8
Hope this helps someone following in the same path.