BFL13 wrote:
Watts of panel doing what?
In a weather like it's been in the last 5-6 weeks in BC it will be doing nothing, regardless of tilt :). Though, Oregon weather is better.
LED draw very little. A rig roomy enough for 40" TV will probably have a fridge, in LP mode it could draw (daily) more than TV because at 50% cycle it's running 12 hours a day. On a hot day you run a fan or two, several hours a day, then a laptop, then something else that OP didn't mention. These are user's many variables, not "solar".
Without knowing the details - I would get at least 300W roof-mounted flat solar in summer in Oregon, assuming conservative use and no dense shade.
If you don't want to install anything - get 2*100W portable, it might work, but you'll have to deal with this setup every time you move the camp.