I am sure you you will get many opinions , I went with the below. I would also go with another cheap 12V car battery. I do not think 1 battery will hack it. I would bet you will get at least 2 years on the cheaps battery if not 3 years.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
100 watt solar panel 107USD
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
$26USD controller