I would run Cupro from the pump to the firewall. Secure it to the fire wall and at least every 18" or 45 cm back to the pump. Replace the copper from the carb to the flex hose at the fire wall with Cupro. This piece needs to be clamped at the back of the engine to minimize vibration flexing. The carb fitting will secure it there. Make the flexible sections with Fuel injection rated hose. Size that as required to match the Cupro line.
Replace any copper between the pump and tank withe Cupro. Add a switch on the dash for the pump if its not already there. If you are using the electric pump full time add an inertial safety cut off switch. Here is an example.
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