fuel system heater and fuel line replacement on 07 western star

I have an 07 western star 4900 with a 14l 60s detroit. Wondering if it would be benificial to bypass the fuel heating system that is on the truck to keep the fuel cooler and to keep from having any problems with it in the future. Don’t really run in any extreme cold areas and if it is very cold i idle the truck. Also looking for suggestions on replacing the fuel lines. Plastic or other? Thanks ahead of time for any answers.

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