Sure, that's fine
Discussion
Awesome! Thanks
I like option 2 as well. Switching it now!
Option 2: Evens vs. Odds
Another very common way to create a 50/50 split is to use parity. For the letters, you can use their number equivalents (a=10, b=11, etc.).
Heads (Even): 0, 2, 4, 6, 8, a, c, e
Tails (Odd): 1, 3, 5, 7, 9, b, d, f