1987 Suburban R10 F.I. fuel line replacement

[crisco]

SO, I am working on my burban, getting it ready to make the trip from upstate ny to colorado and the return fuel line decided to give up the ghost.
Seems like the feed line already went and was replaced by the P.O. with rubber auto shop hose.

The return line is leaking in 2 spots, one is about 3 inches from the fuel tank, the other is 2 feet towards the front. The line is too rusty to just cut, flair, and put rubber hose on like the feed line. Plus I do LONG road trips in it so I want to do it right.

The fun part is I just filled up the 31 gallon tank! I have a holley red pump I can use to drain the tank, and already pulled the bumper so I can get to the strap bolts.

What am I looking at to replace the fuel lines? I do plan on draining the fuel and dropping the tank.

When I drop the tank, is there enough slack in the lines to drop it all the way or do I need to use my go go gadget arms and periscope to disconnect the lines before they rip themselves in 2?

I am pretty good with a bender, and have done numerous brake lines that look factory, should I go that route or order pre-bent lines with fittings?

I haven't worked on a TBI truck yet, just my 71 blazer so any advice would be great!