Honestly, I say build soil with peat moss instead of coco coir.
Pot plants love being in slightly acidic soil and, well, peat plays into that quite well. Which is definitely a pro.
Mix one part sphagnum peat, one part pumice, one part worm castings or compost(or a mixture of both) and you have a great base for super soil.
A pro for coco coir is that plants grow really fast in it when being grown hydroponically. Another pro is that it is considered more sustainable for the environment than sphagnum peat. But, it is pH neutral.
That's about all I know, other than what old growers have taught me. They all swear by sphagnum peat, so I haven't even experimented with coco coir yet.
I hope this was helpful. Good luck!