Secondly, I managed to climb my way (slightly) both up and down the piano with my voice more than I ever have before, which I didn't expect having thought I'd hit my absolute limit prior to this. As of now it's looking like my range will officially land around 3 octaves or perhaps a step more. Here is what I was able to eek out yesterday.
I actually managed to land the B just below my lowest C but not reliably and it was a real struggle, requiring me to attempt it again and again until I just barely managed. So I'm not going to count that one.
Next goal: don't screw up my recital in a few weeks. I did a few runs through it on the grand piano at the vocal studio and found some parts that needed tweaking, mostly pedal work. I've discovered being a little lax with the pedal at home on my electric piano is a lot different than being lax on a real piano. The sounds muddle FAR more on the piano and I'm going to have to make sure I'm more diligent about the pedal in the future.