Gonna be a good sized shop! The more you can do yourself the better. My best friend added a man cave onto the back of his house in San Jose, Ca. a few years back. It was good sized but not a garage. No roll up door...just a big sliding glass door into the backyard and a walk through door on the other side into the side yard. He built heavy duty lumber shelves around the upper perimeter for storage. He did all of his woodworking and loading ammo there. Also put in a bathroom with a shower. He's an electrician by trade so he did all the wiring and sheetrock himself. He had around $50K into it and doing all his project stuff out there and the storage freed up his garage for his wife's Saturn Sky and his Harley.