Replying to Is backyard summer setup worth it?

So recently I have been seriously considering a summer setup build and I want to know If other people think if its worth.

I also have a few questions.

1. how do you get fat pvc tubes for cheap

2. what's the shortest in run someone could make to hit a 10ft plus rail

3. do you really need to use artificial snow material like Msnow

4. could I make my setup on an asphalt driveway and put a down some mats so I don't get hurt.

(I know there's been a million threads on this topic, sorry)