Run the vent line down and out of the bottom of the plane (I just strap it to the firewall)
Normal priming procceedure. The pump will not actually start pumping until the engine gets going.
Tuning the pump is tricky, I had to mess around back and forth for a while between the high speed needle and the pump adjustment (I used the oscillating perry pump)
You don't need a rigid line but you do need a good quality line that is not too flexible. I found that Dubro works well. If you use cheap fuel line the pressure from the pump will blow it off ( I had problems with Great Planes fuel tubing)