Help me buy a solar panel

Thanks again for all of the replies. I have decided that I am going to go with one 140watt Kyocera panel. I will install that and see how it goes. If i find that i need more power then i will buy a 2nd one next year. After measuring my roof i have room for 3 of them. Im just going to mount it flat, i have no desire to be tilting the thing or anything like that. I'm really just after a few extra days camp time before having to run a generator.

I think i will also take the advice of converting some of the lights to LED lights.