I like a regular 10x12 myself with side pullouts.
Big enough for a full tent mode with doors, set it up with poles and you have a huge front porch.
You can do a PU coated if not concerned with weight and want it cheap.
Silnylon 10x12 from campmor is about $100 and 19oz.
The lightest option is a Zpacks or a MYOG cuben tarp. Zpacks largest is 8.5'x11'
and weighs 6.2 oz. That is next on my list