I hope your scare has settled down. It is hard having a 'high risk' pregnancy, which all twin pregnancies are. I found there was enough to worry about with singletons.
I'm expecting identical girls - 34 weeks now. i don't know how people can resist finding out the sex at the scans. Before finding out the flavour it seems like so much energy to expend thinking up extra names. All my babes have been named well before they're born - I can't quite settle until they are named. For me, knowing the sex and their names is part of the pre birth bonding.
Our girls have been named since about 20 weeks - Sanna (pronounced Sah-nah) and Zoe. Middle names are after grandmothers. Zoe is on my right and Sanna is on my left, and I feel I've already bonded with them individually. It's so exciting! I don't think having matching or similar names is good for their individual identities. I hope Sanna and Zoe are different enough names, but do think they sound nice together.
We like short names, that aren't too difficult to spell. Even though lots of people assume Coen is spelt Cohen, and people ask how we'll spell Sanna, I figure they shouldn't need telling too many times as they're short names.
I think the names you're considering are nice. Good luck finding the right ones!