Bloody good job Doctor!
It's a tricky task to get good product out of males, very good work indeed.

If you come across any 'Extra virgin coconut oil' in any of your local food stores, its worth buying as it'll squeeze out a little extra THC both when your cooking and eating.
You should be able to substitute it for the canola oil in your recipe.
It'll add a coconut taste to the chocolate (not a bad thing surely?), and it should increase the potency by a noticeable amount.

P.S. You're a Doctor Who fan I take it? The Christmas special is on here in a few days, I've a batch ready especially for the show!
Time And Relative Dimensions In Space (cakes).