I love SBD and lost all my weight on it. If sugar is a problem it will help you. ChubbyBunny is right, a really clean Phase 1 makes all the difference getting started. I love the way I feel when I'm eating on plan and haven't strayed much in 7 years (though I have not always been good about portions
What are the ingredients in the teriyaki sauce? It's important to read labels on any prepared foods, so many contain added sugar. Soy sauce should be okay.
The coffee creamer is a definite no, both the heavy cream and sugar are problematic. I'm sure other chicks will chime in. I learned to drink my coffee black a long time ago when I tried calorie counting because I wasn't willing to drink calories, so I'm no help now.
Have you checked out the recipes here? There are some great, easy recipes broken down by Phase.
Snacks are what works for you. I love raw veggies and hummus, string cheese, nuts, chickpea crunchies (just made a batch today) then apples & PB in Phase 2.
Planning ahead makes a huge difference. Check out the recipes, tips, and food lists here and ask away
ETA - there are some recipes that are great for freezing too. Even with two of us I often freeze half a recipe into single serving containers for busy weeks