Remove the fuel-filter---you have 3 in the system already---tank pick-up unit, top of fuel pump and top of carb. You do NOT need a 4th filter, especially in such a potentially dangerous position.
The fuel-pipe that you need will have words to the effect that it is compatible with fuel with an ethonal content---any good car excessary shop should be able to supply the correct piping.
You should use proper fuel-pipe clamps. They are designed to stay 'round' as you tighten them up---the jubilee clamp does not. The piping that you require will be either 6mm or 8mm (sorry, can't remember which off the top of my head)