Hi there. Congratulations on your renewed commitment to your walk in Christ. That is a very wise thing indeed.
Also wise, is your decision to quit smoking pot. You asked for Biblical injunctions against or for such things. I can imagine that people will find many verses, including the one you referred to, to justify all manner of things, good and bad. This does not make them "right" in any event, because human beings are incapable of truly applying divine reason and justice, as God does.
That said, it is in my opinion, a rather simple issue here. Your question was, if I may paraphrase, what arguments are there, for or against, in the Bible regarding dope.
First of all, I submit that you will not find the word "dope" or "pot" or "cannibis" anywhere in the Bible (and if you do I have to wonder of the validity of the translation! LOL) This is because at the time the Bible was written, this simply wasn't an issue and therefore the context of your question has to change. Your question really should be "What are the Biblical arguments for or against, putting controversial substances into our bodies?"
At the time that the Bible was written, there wasn't any "stash" but wine and other fermented drinks were certainly available. Everywhere, we see injunctions against drunkeness and spending one's life in pursuit of drinking. I think we can all agree that alcoholism certainly is a disease and that it causes people to do and say all manner of things they should not do and say. Sobriety is preached everywhere, from the Old Testament to the New.
The Bible says that our bodies are "the temple of the Holy Spirit."
The Bible says that man is made "in God's image".
The Bible says that people are to be in close communion with God at all times, prayerful, spiritually awake, and vigilant in our lives. It encourages prayer, fasting and constant vigilance against sin and the snares of the Evil One and continuous repentence.
It says that we should not love anyone or anything, more than we love our God.
The Lord's prayer says "...lead us not into temptation, but deliver us from evil."
Although we do not see pot anywhere mentioned, it is very clear that putting a substance into your body for the sole purpose of getting "high" is an occasion to sin, (just as drinking is for other people), and that no substance should enjoy our attention and our desire more than God and the Holy Spirit. Common sense would tell us that although there is no specfic wording in the Bible that prohibits smoking dope, that such an activity, if it consumes us, if it calls to our soul and calls it away from God, then such a thing is in fact, quite evil. We are not called to satisfy appetites.
Nowhere in the Gospel does Jesus encourage indulgence...everywhere, he preaches repentence, and encourages fasting. Fasting is abstention from indulgence. Everywhere, Jesus preaches vigilance against the snares of the enemy. Common sense tells us that if, when we're all doped out, the devil comes to us, we would not be in the best shape to resist him or even "flee from the devil." Nowhere in the Gospel does Jesus say "Party on!" Instead He said, "Watch and pray, for you know not the hour..." "Take up your cross and follow Me".
So instead of putting pot, jet fuel, and all manner of other chemicals and silly things into our bodies, we should instead hear the words of Jesus of what we SHOULD put in our bodies: "I am the living bread which came down from heaven. If anyone eats of this bread, he will live forever and the bread that I shall give is My flesh, which I shall give for the life of the world."