I would start with the 3 (or 4) day chuck roast. If you have the patience. That's the first thing I did, and it's still my favorite. There are several posts on that one, including my own. The most useful things for SV would be a 12 quart Cambro square container with lid (also useful for brining), and a vacuum sealer. Although you can SV without them by just using a large stock pot, and the water displacement method using ziplock bags.