Replacing stitch & farsight, mission 0

[BloodGod]

hi, is there a way to start off with Custom recruits other than stitch & farsight? i can create and add new recruits @ the Pool, but i'm still wondering how to start off with anyone else other than these 2.

also, to ensure that a Lev 2 stitch/Lev 1 Farsight with 0 exp gets replaced back into the pool after Brahmin Wood. i am looking for the proper method, not the 'kill them off at Mission 1 start and they respawn in Bunker Alpha pool' way.

thanks.

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sry, i duplicated my own thread because previously i posted this under the wrong forum.