We never went over any different sorts of kicks
Although it's good to eventually be able to fin in different ways (e.g. to avoid slit, damaging coral etc) this particular skill is not the most important thing for the newbie diver. Looking at a board like this might give you that impression, but you'll have plenty of time to do this stuff later. Right now you're right in wanting
to learn buoyancy control and not kill myself while I was there.
As your husband only has his four OW course dives under his belt, he's in a worse situation than you (with 15 dives after certification) and you're still understandably worried about your skills.
I think your case is clear-cut. You should both dive with a DM in a group until you feel confident.
After 10 or so hours in the water, then you might think about taking an AOW course.
Strongly seconded. In fact, you might decide on this after the first 5 hours or so of in-water time. I think it'll benefit you both to get further instruction and the AOW course is really only OW Part Two, with added experience dives.
That should answer some of your questions as well.
Other than "drinking out of a flooding regulator," and how to share air, I have NO IDEA what to do if something went bad underwater.
Those are
essential skills which go a long way. (Bit puzzled by your first example, but I guess you either mean recovering a lost 2nd stage or being able to breathe of a free-flowing regulator. Both are essential skills.)
wouldn't know what to do with a leaky o-ring underwater if it bit me.
Most o-rings by far blow at the surface, when you first put the air on. If you get a leak underwater but still have lots of air, slowly ascend and calmly abort the dive with your buddy. (If diving with a DM you might want to signal him or her first.) If your air loss is rapid and severe, use your buddy's octo, slowly ascend and calmly abort the dive. (I'll stop here, this reminds me of other recent threads ...)
we both passed our check-out dives with flying colors,
You are probably good rookie divers, who will be good divers once you get more experience.
The trick is to not dive beyond your abilities.
Well spoken, Charlie! Agreed.
The trickier part is to know when that has happened.
He's right but judging by these posts, I don't you shouldn't dive without a DM yet. You seem overly worried by many things. However, you should
strive to do so as soon as you feel more comfortable. Perhaps two or three dives after the AOW course?