I agree, it is not much at all. I am super matchy matchy, and I wear my VA MOP earrings, a 20 MOP, and two MOP bracelets, all at the same time.
I vote get the earrings! If you want to go simple, I agree with others diamond studs work great. If you wear pearls, I would just check the overtone matches as MOP is not the same as a true pearl. I have the WG MOP, and for WG, VCA uses MOP that has a very silver overtone. My pearls have more of a pink overtone, so they do not match, hence I never wear pearls with my VCA MOP. I actually thought they would go okay, and I could mix and match my pearls with the VCA WG MOP, but they do not look good at all, not to me.
My guess is you have the YG MOP, and VCA uses more a pink overtone for their MOP, so you should be okay. Just compare though to be sure... assuming that matters to you.
For me though, I vote get the matching earrings! It will be a beautiful set!