Uses the 10-1-7 ratio for the Advanced Oil Processing blueprint, which is designed to fit exactly on top of the included Basic Oil Processing blueprint.
By default, the pumps to cracking will not turn on until there is 10k stored in the tank.
Why Refined Concrete boarders the entire facility...
It will show the space to keep clear so the advanced facility can be placed without interference. It's easily removed before bots start running around your base placing it unnecessarily, or you can simply remove it from the blueprints if you dislike it.