Yes, as they already said, use two cans. The beer will probably be better with that instead of sugar, although the finished product may not be as dry as you want. The style of beer you're making kind of depends on whether the malt syrup is hopped or not. If not just figure whatever color looks good for the style you want to brew, using the two cans of malt extract. If hopped already, try to go for a style that has the bitterness of the combination of syrups and the color they will make.
Or just brew a beer, add hops and ferment it, then name the style.......