Fuel line replace question?

[In The Ten Ring]

I have rust in my fuel lines so I've decided to just replace the entire fuel line but I have some questions.

1). Would I need to replace my vent-to-canister line also?

2). The evaporation line, the one that runs up into the pillar behind the
passenger side, how hard is it to replace? I am fearful it may be hard to
get out of the pillar.

3). Has anyone used the stainless steel lines from inline tube OR can one
get a fuel line without a "shipping bend" from a vender here?