my garage is a 24x24 with 8 foot walls. how would you go about spacing the 4 ft 2 bulb t8 fixtures? how many would u use? the garage doors will be 9x7 and will have automatic openers, im wondering how i would put the lights in the area toward the front where the doors will be? i dont know if i would have enough room for the fixtures because of the tracks and auto openers