The breakfast burritos wouldn't be Phase 1 friendly because of the wrap.
Are the yogurts you got the YoBaby ones? They're whole milk yogurt with sugar added, so not OK for Phase 1 (or really any phase of South Beach), although my one year old eats them.
Read the ingredients on the Lean Cuisine's. Make sure there are no hidden starches or sugars.
Baby tomatoes! Yum! I love them on cottage cheese. Mmmmm! Great snack or quick lunch (or breakfast, at that!).
My staples are loads of veggies (zucchini, broccoli, romaine, tomatoes, eggplant, peppers, snap peas, etc.) and quick snack ideas (nuts, pre-cut veggies, cheese sticks).
Good luck!
Kara