Late answer but most of these 'Should I evolve this Pokemon', 'Which Pokemon should I evolve' or 'Evolve vs power up' questions should be marked as a duplicate of the more general How does evolving relate to CP? and/or Does it make a difference to CP if you feed candies before or after evolving?, and indeed, a lot of them are.
If you find any more, be ...
Late answer, but we did end up creating a canonical question for the most common server load issues that Pokemon Go/Niantic faced:
I can't play Pokemon GO! What's wrong?
If you find any more, feel free to flag as a duplicate of that.