Fuel Line (Beat to Death)

[bad 71 chevy]

So my question is what are the best fuel line to run. My plan is to just use 1/2" aluminum or stainless hard line and swagelok fittings. I am doing an 6.0 Ls in a 1971 C10 Long bed. All help appreciated. Looking for the pro and cons of each set up. The reason i am leaning towards the swagelok is i have an abundance of fitting at my disposal.

I have a stock style jimmy/burb tank under the bed as of now and am planning on doing an external pump. I plan on going to e85 at some point as well.

Thanks.