Congrats!

I can relate to the feeling (fairly recently).
For what it's worth, I was successful by tensioning just a very shallow portion of the bottom of keyway. Used a twist flex wrench with a fairly short tab. That allowed me an unencumbered view of the pins. Pin 1 was always my last to bind and it was helpful to see it to get a point of reference.
One word of caution -- tensioning this portion of the keyway tends to scrape away brass over time, depending on the thickness of your tensor blade. Mine was a wiper insert. So now, I can still pick the lock like this, but have to stick in a stiffer wrench or screwdriver to turn the plug to open. The first wrench slips out of place when I apply more pressure (due to eroding brass from that portion of the keyway).