I think 61k xp is what you got. And double xp for new mons registered is correct.
I used pidgycal to crack my first lucky egg the other day and they recommended 67 mons for max usage with a time of 30.5min needed.
I went so fast trying to evolve 67 mons thinking I would be cutting it close. In the end I was surprised 2 minutes left.
Then I realized I could have squeezed another 6 mons at least.
So I went from lvl 15 to 18.
Now I know though that I can do 73 mons at least in that 30 min span for my next egg. What sucks now is that these rats and birds are higher levels so farming them is much harder.