gee, TS, your post sounds like something I wrote. I was advised NOT to buy equipment before I got certified and to try various configurations but NOooooo. I took the class/pool portion of my OW and rushed out to buy my gear. Like you I wanted streamlined so I bought the Air2 over the Octo and now regret it for the same reasons TS&M stated. Difficult to use and if the need arose, I would really regret having to breath on that thing while my buddy used my easy breathing reg.
I got lucky and got fins I like but bought a mask I quickly replaced. I have a Scuba Pro GlidePlus BC and I know it is good quality but wonder what a back inflated BC is like.
I bought a SmartCom computer and hate it. Sure, it provides all the info I need underwater but it is very user un-friendly when trying to run through the menu. And the alarms.....they are factory set so conservatively they are ridiculous. I kick twice and the breathing too hard lungs icon pops up. Seemingly the thing is always beeping for something or other. I have learned to ignore it but everyone I dive with is always looking around wondering what is that beeping and where is it coming from. Anyone diving with me more than once just has a laugh with me about it.
If I could do it over,,,,,,,