Lots of good info so I will only add a few things I don't see mentioned to add to your wish list, to be pared down as finances dictate:
"You can never have too many outlets". I recommend at least a duplex outlet every 4' run of wall (20A circuits). In my shop, I put in double duplex, with each duplex in the double box on separate circuits. I can plug the15A vac and the 15A saw into the same location but different circuit, minimizing the cord tripping hazard. More outlets does not mean you need more power. The power needed is based on what you realistically think you will have plugged in and running at the same time on the same circuit, not the number of outlets installed. Some will end up rarely being used, but its easier to install at the beginning than add on later.
In the ceiling, install duplex outlets instead of light fixtures. That way you can plug in multiple LED light bars, located exactly where you need them (most have a 5' cord), allowing for spot lighting for a workbench, etc. and general lighting for the shop area. If you use 12ga wire and a 20A circuit, the outlets also give you the ability to drop down power to a machine not near a wall.
For the 220v equipment, put at least one 220v 30A outlet on each wall to allow relocating in the future. (For any 40A or 50A circuits, might one to preplan those for the best location for that item).
Install some outside receptacles, and also a circuit for exterior lighting at each corner.
If you do go with a separate power service, AND you use a portable generator as your emergency power during outages, consider putting in a transfer switch for it at the garage. The shop will be a great way to exercise the generator every month or so, and thus ensure you have a good useable unit when the need arises. They need to be run under load for an hour or so to keep the windings dried out, as well as you need to keep the fuel from degrading (i.e gasoline or diesel).
Just a few thoughts to consider.