In fact, we have pretty much settled on a pump -- the Medela Symphony. At this point it looks as though we are going to rent it for three months since buying it would be about $1300.
We found a site called Yummy Mummy which rents them in the NY area for $250 for three months.
Pro-tip : don't search for Yummy Mummy without the accompanying "pump rental" unless you want some seriously disturbing returns.
We saw our beautiful baby again today and he is looking better every day. I hope we can bring him home soon.