Proper Circuit Disconnect Size
The minimum service size in the NEC current code is 100a (Ca. may have an exception) the wire to the service can be derated 83%. I don’t know how they got away with a smaller service but all gas appliances 60amp would probably be fine, even A 48” sub zero doesn’t draw that much power especially if full I love mine. And the 5 ton ac is probably the largest load on the system at about 30 amps , the total lighting and receptacle load would be 28 amps if everything was maxed out so you still have room for garbage disposal trash compactor etc. the dryer may be electric and if everything and I mean everything is on at the same time it probably would be ok because of load diversity load calculations are covered in article 220 of the NEC if you want to look them up.