Hi! I've been doing this a while (about 2.5 months), and I also train in the morning...I thought I'd chime in with my favorite pre- and post-WO meals. I do CrossFit at 5:30 or 6:30 am, and eat a good 1.5-hours before the class starts. (Yes, I get up at 4am most days. I'm one of those chirpy morning people. )
Pre WO: An egg fried in some ghee or coconut oil. Easy, simple, delicious. I've also had success with a handful of raw cashews or almonds, but that's only when I run out of eggs.
Post WO: "Pancakes" that are basically 50% egg white and 50% mashed plantain (canned/pre-cooked and pureed squash or sweet potato would also work here) with a dash of cinnamon/salt and cooked on a griddle. Mashed sweet potato with baked salmon or chicken breast is also wonderful.
I'm on my way to work by 7:30 and have my 'real' Meal 1 around 8:30 or 9:00 - today it was ground beef and sweet potato hash with a side of green beans and half of an avocado. YUM.