Yes! Get the earrings... Vintage size. I personally am not a fan of Magic earrings with a 20. The 20 motifs flow so well, but with Magic earrings, all of a sudden, there are these swollen jumbo size motifs on the ear. To me, it puffs up the face, and the flow is off to my eye. The Vintage size will look awesome when you wear your 20! There is something about a bunch of same size motifs floating around your neckline and then on the ear. It really pops. You'll see what I mean when you go to the boutique and try the WG MOP version (or any other "set"). I love that look and hope you might like it too.
Now... after getting the 20 motif and earrings, just go for broke and get two bracelets! You will now have the full set!

I have two WG MOP bracelets and love wearing the two together. It adds a lot more presence (e.g. bold) without being busy.
So exciting! Another WG 20 motif lover!