Seems like 1.5 quart would be fine. I looked at Pegasus to get the parts separately, and the tank and electronic valve together are about $300, and we haven't done the nice AN fittings, yet. I think the BAT kit is a good package.

Only way you'd save much money is going with a manual valve, but that seems like it would be a PITA.

Function before fashion. '96 Contour SE "Toss the Contour into a corner, and it's as easy to catch as a softball thrown by a preschooler." -Edmunds, 1998