Regulator placement -- EFI setup

Looking at options for fuel regulator placement, it's the last thing I need to sort out to finish shopping list for plumbing parts, as expensive as that is, don;t want to buy any more than I need.

Accel EFI (full sequential)
Mallory 11106M Compact pump (pre and post filters in place)
Mallory 4305M Regulator
-10 AN feed line, -8 AN return

Option 1a
Feed from pump to one fuel rail. Crossover at back of manifold to other rail. Come off of second rail to input of regulator, return to tank

Option 1b
Feed from pump to Y-block to both rails, feed from back of both rails to Y-block into regulator, return to tank (this was someones suggestion locally, to me it seems like it would be done more for appearance and just costs more in plumbing parts)

Option 2
Feed from pump to regulator, feed both fuel rails independently from regulator, return from regulator to tank

Option 1a seems like the choice given most factory setups are this way, just wanted to see what others opinions are here and if there is a better way to do it.