You might go to this page first..
http://cookshack.com/index.php?pr=Smokin_Okieit has great info about brining and other info for smoking different meats. I can't answer the time issue with regards to the vacuum container. I know it shortens the time.. but how much ???
Check the label on your birds.. some come "enhanced" from the supermarket. If so, you don't need (or want) to brine.. IMO.. might make the meat too salty.