your setup/lines/pump are fine for e85. the biggest thing is it needs to be tuned for it since the energy contained within is less than gasoline hence requiring a larger amount for the same power output. if you want to be able to switch back and forth between gas and e85 then you'll need to have 2 chips/programs to go back and forth since e85 will have more fuel and timing advance than the gas tune.

you may or may not see gains if your setup is making the max output w/o coming close to detonation already. it's not always a given that higher octane will allow you to advance your timing to 11ty billion and make more power. there is a point at which advancing timing stops making power and sometimes that's before the knock threshold depending on if you're n/a, boosted (low/hi), high/low comp, etc.

most dyno shops can tune it if they know how to read lamda or convert the afr to match that of e85. i set up our dyno to read the afr based on the fuel used looking at stoich points, rich/lean for a particular fuel.