Advice 20" wheel-tire setup

Hey guys, I’m trying to improve the stance of my S6, recently I got i great deal on some factory A7 20" Cartesia wheels brand new in the box - 20X9 et 37. (example of what they look like below)

I plan on going with H&R lowering springs and tires to wrap those wheels.

I assume i’ll have to roll all four corners, i need help deciding what tire spec to go with.

265/30/20
235/35/20 - for a slightly stretched look

i appreciate the feedback.

stock

http://audirevolution.net/addons/albums/images/525925163.jpg

this is the stance i’m hoping to achieve.

http://audirevolution.net/addons/albums/images/811005843.jpg

or this

http://audirevolution.net/addons/albums/images/984230918.jpg