[K Peculier]

I get the feeling that being a secret homunculi chimera is not going to be a very well-kept one. Especially if you want those height ranges and you intend to roleplay in public often.

Otherwise you're free to use that height range, I'll approve it for the chimera but if you're abusing it any other GM can revoke it.

Also keep in mind that homunculi are not a way to raise the dead 1 for 1 or stuff a soul in to substitute for an older character. As long as its a new character you're good.