I didn't make substitutions however it is only my second time working with coconut oil and almond butter and both recipes were a little soft. (elanaspantry.com)
I actually did make substitutions for the flours, but it didn't harm the recipe. (recreatinghappiness.com)
I'll have to try your version with coconut oil — I've never made that substitution before. (smittenkitchen.com)