As others have mentioned, your approval to vape is the only approval that matters. Just out of curiosity, are you planning on using the 36mg nic just because you have it? Have you thought of using 0-6mg nic rather than going straight to the 36mg? I only mention this because 6 months with no nic is a huge accomplishment and in the long run it may be harder to give it up again if you turn back to nic. What ever route you choose in terms of nic, choosing to vape is much better than smoking.