Hi,
First up, good idea but I would be a bit careful about asking bloggers to post 4 links. Bloggers hate being told what to do from my experience. I would just ask them to link through to the resort without putting too much pressure on them.
The idea is very sound but I would be a bit more careful, I have seen bloggers come out and post about "X place" wants us to blog for links and put out a lot of bad press.
However, otherwise I would use opensite explorer to have a look at the blogs you are interested in and rank them against each other, this is what I do and it's quick and easy. Remember your link profile should look nice and natural, so don't try and get too tricky.
Also today's small blog might be the next big thing tomorrow, so there is no harm in getting a smaller blog to link through.
Great idea - just be careful in the execution, bloggers can turn on you very quickly!
A