order of introduction

[Tim Marvin]

I'll give you some sand Ross.

[Ross]

Cool
I'll bring some sand too.

[MikeP]

I'd actually add the 6 line wrasse last - actually I'd maybe not put him in at all and look at a more low key wrasse like maybe a fairy wrasse - 6 lines get mean and will destroy the microfauna in your tank to boot.