Believe it or not, my new years resolution was to get better at math, and since it's now June and I got bored with math problems a few months ago, I think I will count this
It definitely helps with mental math.
As is probably evident, for me personally, the calculation of GHA was the hardest part with all the hour, min and sec adjustments. And GHA seems to be a common denominator in the different methods.
I might try the 2 stars graphical map method to get both lat/lon. My understanding is that it can be done at any time regardless of whether the stars are at their upper culmination (this is good b/c I don't think I understand upper culmination yet). However, I think I might cheat and use the same GHA for both star observations and try to take the two observations as quickly as possible. This way I only have to determine one GHA instead of properly determining both GHA values. I assume error will still be quite minimal.