nice, i was wondering if i could just use about 2 gallons of water even though it calls for 3 and be fineI've done a lot of extract kits with just a 2 gallon brewpot and then I top it off to 5 gallons after the wort cools and I dump it into the fermenting bucket. I've never had a problem. They have all come out fine.
sweetYou can do most extracts in smaller pots as AABass says, just know that your hop utilization may suffer in the thicker boil, and you may get more caramelization (darker colors, caramel flavors) than you want, and you have to be maybe a little more careful about burning when you add the extract. That said, I'm not very scientific when I do extract brews...I just get it as full as I can without risking boil over, then fill to 5 gals in the fermenter. Good luck, have fun!