Planning Fuel System

[Fuelie Fan]

This is not much different, functionally, from running crossovers front and rear, it just brings the junction points away from the rail. It's an improvement I suppose, but not sure it's really necessary. Just as long as your system doesn't have a dead-head where standing waves can form, you'll be fine. Plus, if you were to have problems with harmonics, it's a lot lighter and cleaner to add a damper than all that extra line.
Also, your lines sound pretty oversized (unless you're making 4 digit horsepower!)