From westchester you would just get on I75 North... go up to exit 44 and get off. Turn right onto 725 (east). Go up to the second light and turn right again onto 741 South. The mall entrance is the first light and you'll turn left. Turn right off the access road as soon as you can, then right into the parking lot closest to 741. I/we should be there at around 1:00 pm this saturday.
It couldn't take you more than 30-45 minutes from westchester. If you go to www.maps.com
it'll give you door to door directions & an approximate time. Just put your endpoint as the intersection of 725 & 741.