I came very close to buying a Chessie a few months back. One of the major things that I really loved about the breed was how they behave around friends and family. They are awesome. If you have kids, a Chessie is a great great dog. I have known of chessies that have rescued kids out of pools and ponds.

I believe you may have some work with regards to territorialism, but shouldn't be insurmountable.

Good luck,