Question about running fuel lines

[kevmic28]

I bought a Blazer tank this summer and I am finally gonna install it. What is the best way to run the fuel line and how much should I need? Also what do I do about an extra hose on the tank. I think its either a evap line or a return line.
Here is a pic of what I am working with. Picked up the tank for 20 bucks.
One more Question that you may not be able to answer for me. What diameter is the filler tube that connects to the tank.