Transportation question from Seattle Airport

[SF]

We are looking for a van or a private shuttle to take our family of 4 plus a medium amnt. of luggage to our hotel and then return us to the airport a week later. We don't want to share a ride and stop at several hotels after just getting off a long flight. A towncar won't be big enough to hold us and the luggage comfortably. Does anyone have a suggestion as to a reasonable limo company or a shuttle service that has private vans?

 

I already called the Evergreen Towncar Service which was referred by a board member but like I said a towncar won't be sufficient for us and they didn't have anything else to accommodate us. A taxi won't hold our luggage in the trunk so that's out and most limo companies I called are way too expensive (around $125.00).

 

Any help or info would be greatly appreciated.