What you listed pump, injectors, tune is all you should need. It takes about 28% more fuel to run e85. It is well worth it. Just changing to e85 I gained 40hp with out upping boost or triming.
I changed to full e85 but will be installing a tune for 93octane incase I am some where with out e85. Just to be sure.
I built my motor. Forged 8bolt crank, manly rod, diamond piston, iron block.