need some advice, running 3/8" fuel line, how to run, what to use

Im trying to plumb new 3/8" fuel line to my 69 valiant, 408 stroker. upgrading to a 3/8" line, with a high flow mechanical fuel pump. Tried bending a metal line in the factory location, but the 90 degree tight bends at the rear wheel well are tricky and we crushed the tubing. Question(s) is/are.... is there a better place to run the line? Should I bite the bullet and go with an AN soft line? Depending on how it runs, I may add an electric pump in the future if needed, so would it be best to run it close to the tank? I have a front and rear RMS suspension. I plan on installing 1 1/2"x 3" subframe connectors and thought about running the soft line through the frame and the connectors. TTI ceramic coated exhaust. I'm trying to think ahead too. I'm in Canada, so it doesn't get to hot, so most of the guys up hear don't think a return line is necessary at this point, but I'd like to make provision for one, if needed. Any suggestions or areas of concern? Pics would be nice.