So it looks like I'm going to have to start getting rid of some of my ASICs, underclock my FrankenJups even more or look for datacenter hosting... unless someone has some other helpful tips that don't involve me adding more electrical service to my house.
Maybe you know this already, but remember that the electrical load is being spread between two conductors to the home. If you manage to put 100 amps on one conductor, the breaker will trip even if the other conductor only has 50. You've got quite a bit there (especially the AC), but you may be able to rearrange things so that the breaker doesn't trip (move some of the miners to a different circuit either by plugging them in somewhere else or swapping a breaker or two in the panel so that the load is on the other conductor). If you've got a clamp meter, it'd be handy.