So the sous vide tilapia turned out fabulous. 134 degrees for 30 minutes, and I served the filets with a lemon-butter herb sauce (butter, lemon juice, herbs de Provence, Worcestershire and Johnny's Seafood seasoning) with toasted slivered almonds for garnish, and couscous pilaf and roasted carrots with balsamic drizzle. My wife said she would eat this again. The fish was perfectly and evenly cooked throughout to a flake and was very moist.
I was a bit concerned about cooking the boneless skinless filets in the individual cryovac packs, as opposed to putting them all in a bag with seasoning added, but the filets turned out just fine with the sauce.