Hi all been a Sous Vider since my wife bought me a unit for Christmas. Absolutely love it and have tried several different things. Cooked several sirloin roasts with great success and am now wondering about doing an entire sirloin roast for our holidays this upcoming week. Can I do that? will probaby be 7-8 pounds of beef in one large roast. all the time charts etc I can find max is like 2 inches thick. Has anyone done this? How long should I cook it for?