Fuel line

Need some feedback / going to replace 5/16 steel fuel line , and fuel system , replaced fuel tank with a fuel cell , bought new fuel filter , and electric fuel pump , and a relay switch , trying to decide on fuel lines , want to run 1/2 from pump to a cool can ( back to front ) of car, will be using 8An SS braided from cool can to regulater to carb filter then 6An braided fuel line on carb , so hears my question what type on line would you use from cell to motor SS braided , steel line , or Aluminim thanks for feed back in advance Z_daddy