Here is what you need for mats. I have two 5 X 10 flexrolls. It is my portable dojo. Run you about $500 bucks. You can carry them. They fit perfectly in my station wagon and can be set up fast and rolled up as well. good quality and have tatami surface as well.
As a guy who pack's his 'dojo' around in the back of his mini-van I can appreciate those.