Just went out and measured mine (EX AWD) and it is 72" WITH the roof rack. The height of the vehicle w/ the antenna is close to the ~70.4" figure you quoted.
With or without the roofrack you should be ok IF you take it slow. I would go out and look for the low spots and see if the management of your garage has already padded their height restriction to ensure no one gets scraped or stuck. It would still make me a little nervous being that close... :shock: