Solar Panel ... This a good one to start with for my needs?

A good setup isn't that expensive anymore, but you won't get anything useful for <$100. I'd say take the 125 watt recommendation above and double it. There are great deals on 200watt plus grid tie type panels that you can pair with a cheap mppt controller that will work well. Keep in mind you want extra capacity to help you out in less than ideal weather or locations.

For your usage though 3 days 2 nights your 2 6volts may do the job on their own.