7mm? How long was the strand? Did you buy them yet?
7mm is very small for many of us here on this forum. I wear much larger but that is just me. Have you put a strand of 7mm draped over your wrist to see if that is the look you're looking for? This size is available as a necklace in many stores. Depending on the cost it's either a good deal or a bad deal for the baroque akoyas.
I hope you're happy with the outcome. What clasp are you buying to do this?