If you only want to stock one kind of extract, get pale or pilsner. You can always use specialty grains (carapils, caramel, munich, etc.) to darken it up.
If you do take that advice, a 50-lb sack of DME will fit nicely in a pair of 5-gallon pails. Get ones that have lids that seal well, though.
Natural 20 Brewery
Yes, that *is* beer. Water, malt, hops, and yeast mean it's beer. Go ahead and try a glass...