I honestly expected to see about 5 pages of replies to your question. Hot subject.
See if you can have a "discover scuba" experience with a couple of the dive shops. That might give you an idea what training with them will be like.
Sooner or later someone will say you should continue until you are a Master. The other school of thought is to learn by diving. Regardless, both schools will tell you to dive within your training and experience.
Is the OW enough? Depends on what you will be doing. That quarry probably won't be too great test (I've never been there). So you are probably safe with the OW. (You did notice I said probably???) More training will make you safer. More dives will make you safer. Which path is the way you want to learn?
I'm a newbie and decided to continue courses until I reach Master. (Beyond that, undecided.) I feel the classroom work better prepares me for any dive, making my next one a little safer. Maybe I should spend the money and time diving. Diving is an activity, after all, and requires skills (book smarts doesn't translate to skills without experience).
That's my take.