Don't wimp out on the fuel pump and feed and return lines when running BIG injectors and E85. You say you just want to cruise around but we all know the urge will hit you to put the pedal to the metal! Inadequate fuel system cannot be "adjusted out" with FAST! Go with -10 feed and -8 return and a strong pump (Aeromotive A1000 or bigger) mounted outside the fuel tank and some decent size fuel filters. Check out the E85 section for some tips on compatibility.
Conrad C.