Hi, guys! Heather and Edward, thank you very much for your replies.
Edward, like you, my students only really get exposure to French five times a week for 42 minutes. That's roughly... 3.5 hours a week. Not much.

So, naturally, like you (guys), I want to get them using as much French as they know! As I teach French as a
foreign language, I totally understand!
Heather, I love your idea of using Rule #4 to emphasize speaking in the target language! What a great idea!
So, are you guys suggesting I use WBT in L1 (English) first, and then go to L2 (French) later? I was thinking of doing this on the first day:
1.) Class-Yes // Classe - Oui
2.) Teach-OK // Expliquez- D'accord
3.) Hands & Eyes // Mains et Yeux
With each one, of course, I would explain the vocab, and use lots of gestures. Hands & Eyes shouldn't be too difficult.

I figure this way, students feel that they've learned (or reviewed) something that day in class, and no one will feel that the first day has been wasted.
With getting them to produce in L2 (French), that's generally reserved for the morning Greet & Warm-Up, where they'll be working with strictly the French they should know at that point in time. For most of my Teach-OK sessions, it should be them explaining vocabulary, directions, or concepts to each other in mostly L1 (English). Vocabulary will of course, be mixed (English & French).
With games, I'd be hoping to hear more French from them, of course.
As I teach High Schoolers, I can be a little bit more demanding than the Elementary side of things. Of course, I still try to pull all the fun Elementary things in that they still enjoy (singing, hands on stuff, etc.)