Thanks everybody! Your replies, and those in the link provided, were helpful. We would normally choose a full size bed, but since we already have a queen size one for what used to be our guest bedroom (it's now our youngest kid's room), we'd like to use what we already have. Good point about the bedding, I'll start keeping my eye out ahead of time. So far she likes her crib, so I'll postpone the transition for the time being.
anyway, thanks again
katemom