Hi Bob and yes I agree the figures are very un-realistic. This really isn't so much a plan because the equipment being run are all my computers, my TV, DVD, sub woofer, receiver, a few 60 watt lights, satellite telephone, satellite Internet, laser printer, network switches, wireless router, page scanner, tape backup, USB hub, okay you get the picture - more equipment running all at the same time for six hours than I would even think about running even here at my home in Texas, but especially while in the back country.
I'm just trying to get an idea on the math to make sure I'm doing that correctly and the information/help I've found on this forum has been great. I like asking questions/reading here because I don't see the "salesman" approach to answers. I like the real world stuff, kind of like what you posted. Anyway lighting will most likely be cold cathode, computer equipment will be optimized most likely down to a laptop at most and I'm sure I can greatly reduce power consumption. Audio equipment can also be greatly reduced along with a host of other power saving measures, reductions including discontinued use of some items. I mean how much TV am I really going to watch? I don't watch but a few hours a week now. So the goal is just to try and see if the math is basically right.
In fact when I start building I'm sure I'll be starting out very small. Just enough lighting to not have to use gas lanterns much and maybe enough power generation for some sort of communications device (radio, satellite phone ..etc). I'm sure I'll be busy enough with heating, water and all the other alternative methods of living of a back country off the grid lifestyle and home require.
So I haven't seen any objections to the math so far so I'm taking that as I got it right? Of course DC is very inefficient so I know there's a lot of loss there, along with loss with the inverter, lack of truly having 5 hours of direct perfect sunlight on all panels ..etc and much more.
Thanks everyone for the comments and help.