Consider this; hemp looks just like the other stuff ;-)
To answer your question; I believe it's best to have THC and CBD for most healing and healthful effects across cancer cell eradication in the brain, fighting dementia, etc.
Also, you should not need a permit. F 'em! Aholes need to give it a rest. Get your laws changed; that's the real course of action.. but you can peacefully co-exist for now (self preservation).
I like a closet to germinate and clone indoors, or section of garage, reflective light-proofed so it's not seen from outside, and efficient reflection. Take outdoors to flower (can be a shed with white covering, lockable). Nobody knows it's there; it's not big. You will have all the leaf you need.
I recommend an indica hybrid that grows quick in hydroponic solution and rockwool. Keep a fresh crop on hand, at all times of year; new crop every 2 months. You don't need a big crop at that point; just enough for friends and family.
https://steemit.com/marijuana/@surfyogi/the-joys-of-an-herb-garden-at-home-v3-part-1-of-3-updated
This is Tennessee. The wheels of progress sometimes turn slowly. I agree that we shouldn't need permits too. Right now we are not willing to take the risk of growing it ourselves.