Did you mean Goal Zero's Escape 150?
http://www.goalzero.com/shop/p/60//1:4/ Based on the description provide that will not what you expect it to do.
According to the information provided above you will ned a much bigger system. The inverter on that device only supply 80W of power at 110/120V AC.
You indicated that your most critical picec of equipment need 250 Watts.
Looking at there other system you need something more like the Yeti 1250
http://www.goalzero.com/shop/p/140/...rator/2:8/ It terms of power output, but this only has 1.25 KWh of reserve so that system would only be good for about 5 hours.
I am not making any particular recommendation here other than to say the Escape 150 appers to not be big enough to do the job you need it to do.
Niel