Pretty much a cooler against a 50bb stack, would be just calling the turn if it were against a 100b or bigger stack.

Nothing you can do about this for 50bb. I agree with Harvie about only calling the turn against full stacked players; even if the board wasn't paired.

I would have prefered a bigger c bet though. Many micro players will refuse to fold anything to a c bet less than half pot. Once you bink the turn I want a bigger bet too. There's a typical pattern where you will get called on the flop and turn then they fold the river, maximise your value. Also, with this stack depth you've left more than a pot size bet left behind on the river. This is something you want to avoid in spots where you're looking to get all the money in.