Got an old Arion FX case, Tuner, Metal Dist, Chorus, Flanger - unfortunatly the delay has diven up!.. sounds nice on gtr and bass, but with the eldest and guitars...
prefer a phaser on the bass, more organic, Flangers tend to sound more clocked and mechanical, i know they are a different effect, but have a similar feel...- so got cheapy Wholenote (chord) Chorus and a Phaser - Copies of the old Ibanez plastic bug style 'Sound Tank' range, so the Flanger may be worth a look...
As for order, with the delay last you get more of the same... with the delay earlier in the chain, say before a flanger, phaser, chorus or any 'shifter' your repeats are subtly different... give it a try...