Austin...I'd say start with two cans and taste it...I think the next time I do it..I am going to actually use 3 cans of concentrate, and that should hit a mark around 1.015 or so in my guesstimate. I'll let you know in another day when I pull my first glass off of the keg..I have it carbonating right now.
5 gal secondary: Strawberry Mead
1 gallon secondary: Blood orange Mead
1 gallon secondary: Grape Mead
On Tap: Blackberry Blonde Ale
On Tap: Apple/Cherry Hard Cider