Haha In my professional electrician opinion I would for sure put a 100 Amp sub panel in your garage so you will have plenty of power and plenty of expanding room! rather more than less, its easier to do it now than it is when everything is done. I would suggest 2x4 fluorescent lighting, 5k lamps are really bright, but lots of times I have installed can lighting in garages for the little extra room and it looks pretty slick and classy! Put power out in the shed right away you wont regret it.