Sounds like an ideal setup to me... Wonder what you'd think of some experimentation? Mebbe try some plants here and there, some in a pocket of soil, some in a pocket of
compost, some just in the chips. The sky is the limit as far as how many things you could try...
I am a believer in compost. I won't argue Ford & Chevy, but I will stick up for compost, it has really made a difference around here... Best of luck to you, whatever you decide to try! TM