Sounds kinda of cramped to me. Have you considered using on of the vans? We used a van for our Sept trip (but there were 7 of us including 2 in car seats). We had lots of room and luggage went in the back. In the towncar a friend and I used in Dec our luggage went into the truck. It would have still been comfortable with a 3rd party with us but I dont think it would have been very comfortable with 3 other ppl in our party and the driver. JMO.