When it comes to lights I am a FREAK
Run t-5 fixtures with the Mirror'd backing to them. To get the best bang for the buck and prevent hot and cold spots in there run 3, 4' 2 bulbs per fixture and the amount of light is perfect. Or run 3, 4' 3 bulbs per fixture youll love it even more so. iirc the ones that my buddy has in his shop per fixture (3 bulbs) is rated at like 15,000 lumens. and he has 4 fixtures. Even in his shop 15x35 its not enough but his roof is also 16ft we dropped them down by 4ft.