Cool thread. I gave this a go with my 12.5 the other night and failed. Alas, the seeing wasn't so great, but the night before was excellent. I will try again! It will be cool to see a white dwarf, even if it takes years.
btw. in case you haven't come across this before, 'Deep sky videos' are doing the Messier catalogue. Here's M57: https://www.youtube....h?v=_TovLkVHfZE