Check your box to see if you have room to have either an other 110 20 amp or 240 30 amp, have one of them installed for peace mind. on the 240 you can run all three and no breaker should pop.the cost won't be much if you can do it your self  or get friend to, for the 110 it might be 40 bucks for parts, the cost for me to have 2 110 was 60 bucks in parts . my friend wired it free.

Check your state also make sure they don't require the home owner to get a permit,in my state the home owner can do whatever he wants to the existing service with out applying for a permit or needing one . but if you decide to change the service from 200 amp to 300 amps lets say you need a permit and have to let the power company know etc but can still do it your self.

You won't be sorry you added those lines if your breaker box has the room.

but you are diff over loading that breaker as they are telling you, not much else you can do, till, you run that line, other then put two on one breaker, then put one another breaker.

There may be more on that breaker then just those miner as well by the sound of it,  even worse and  unsafe .


 Oyea  by all means get either this http://www.amazon.com/P3-P4400-Electricity-Usage-Monitor/dp/B00009MDBU/ref=sr_1_1?ie=UTF8&qid=1428382682&sr=8-1&keywords=kil+o+wat

 or this

 http://www.amazon.com/Kill---Watt-PS-10-Electric-Power/dp/B008VIDS34/ref=sr_1_83?s=hi&ie=UTF8&qid=1428382794&sr=1-83 i use both and love them both .