5 years ago, I upgraded to a 320 amp service (technically a 400 amp service). Instead of having to change everything out at the house, my buddy who works for the local coop, and sets up these projects, suggested making the new shop the place to set a new meter up, and split from there. Our coop will furnish an upgraded transformer, and entry cable up to 150', to the new meter base.
Being I needed to bring 200 amp service to the shop, no matter what I did, it was more economical to just run 200 amp service back to the house, from the shop. That sure beat changing out the panel in the house, plus all the connections, which go to the old shop, new wood shop, and a small storage building, with a welder hook up.
I have a 200 amp panel in the shop, which I put a 100 amp main beaker in, to run a feed to the new horse barn, which has multiple lights, outlets, heated water drinking fountain, and can still add a welder plug in the trailer storage someday, if wanted, with no strain on the setup.
Plus I put in a huge manual transfer switch, where I can hook up the generator, and feed everything, in case of an extended power outage, and do it from the shop, instead of a quick connect at the house, and have to park the tractor & generator in the yard.