Just my experience, but it's going to drink gas like there is no tomorrow no matter what you use for a carb. A small 4bbl can get a lot better mileage that a 2 bbl if you can keep it off the secondaries most of the time and will actually have much better throttle response off idle. For a 360 with a stock cam, I think something as small as a 500 cfm would work great. I've never been too fond of Edelbrock carbs. Holley Truck Avengers work pretty well and there is almost an unlimited number of pieces available to dial them in for a specific application.
1955 CJ 3B, 381cid sbc (441cid all aluminum sbc coming soon), AGE M22W, Teralows, Warn OD, OBA, Premier Power welder, Warn 8274
1968 CJ 5, factory 225" w/ headers/450 cfm Holley, T86AA, Belleview winch, Warn OD
2012 Wrangler Rubicon Unlimited, Warn 9.5 xp-s winch