Return lines bleedinng!!!

[IEmike]

I fnally after two weeks of being a hanger Queen, Got the car to turn over.
I primed the pump and pulled off injector lines( they were dry.
two qick shots of starting fluid nd she cranked over.
Dorve it around and ran well.
sounded a little ruff but not a lot of vibration Oil cap just laid there!! ( good thing)
I noticed the the return lines were leaking on three of the five injectors and there was a crack in the return hose to the fuel filter.

Want to replace all the Return lines.
they say napa 1/8" fuel lines, (black)
can I use the Clear fuel lines to keep an eye on things?
would this also cause a drop in fuel to the injectors when it's turned off?