Lovely dress. For February, it'll still be chilly so I'd wear a fake fur cape/stole, plus over-the-elbow (opera length) satin gloves for extra warmth. They can be taken off after the ceremony.
If it is all inside, I'd still have the fake fur stole but with short or elbow length satin gloves maybe, because it just looks good to have part of the rest of the arm covered when wearing a stole in winter months.
I think whatever you choose to wear as an over layer, it should be either short (but not cropped) or long length but not in between (ie hip length). I'd go for short personally as it suits midi lengths. If you go for long, it needs to be a quite dressy coat, not functional looking.