House and Shop on 100 AMP Service
ESPECIALLY with mostly gas appliances, I wouldn't worry about it. I have a small woodworking shop that I feed with a 60A feeder breaker and I have NEVER tripped it. What you have to remember is that if it's just YOU working in the shop, you are not going to be running more than one tool at a time, plus maybe a dust collector (highly recommended by the way) and some lighting. Homeowner type 240V single phase bench power tools are generally limited to 2HP, so about 12A at 240V worst-case scenario. It's not going to be a problem.