first off, 60 amp 2 pole just means, its a breaker designed for 240v. 120 on each leg of the breaker , with no more then 60 amps running through each side. So yes , you
could get 120 amps outta there, but that breaker was not designed for 2 separate "loads". It is designed for one load at 220v with a max of 60 amps running through it. also that breaker is made to "break" both sides when something goes wrong, so there is another reason why u wouldnt want to run several 110's off that breaker.
7000 watts would be MAXing the 60 amps out at 120v. If you were to use 240v, then you could get closer to 14,000.
Now you could run a sub panel off the 60 amp breaker, or you can just run a couple of wires to the panel. (14guage wire =15 amps and 12g wire =20 amps)