Dammit...just when I feel like I get it nailed down.
I'm thinking more on the small side of 6 gallons. I was thinking around 3 gallons. Something I can put up on a small gas burner and/or stove. I am thinking put away when not in use. I really don't know what the hell I'm doing and small batch runs makes sense to me right now. I really don't want a stainless pot rig; those copper models are just so damn beautiful.
I have a 3/8 OD coil already rigged up in an antique Igloo cooler. I am thinking something like that Kentucky still design. It seems like a simpler design I guess maybe I could cut the measurements in half? If I get to where I want bigger I'll go bigger. I'm thinking of them like my guitars-you can never have too many.