I would definitely recommend getting a bigger kettle and a turkey fryer to brew outside. Brewing can be very messy and brewing outside makes cleanup that much easier. Also, while an 8 gallon pot is sufficient for extract brewing, if you ever decide you want to jump to All Grain, you will need a minimum 10 gallon pot, with 15 being ideal. With that being said, with both of these kits, you get quite a few nice upgrades. It seems to me that the Williams Kit is cheaper, but only has buckets and not glass carboys. In the end, both kits will get you started quite nicely. You will also either upgrade or replace most of the stuff in those kits through out the years. It really depends on how much you want to spend right now out of the gate.