In my opinion (i don't count for official stuffs), the references are there....we have video game, art, mini, etc. So from that point, I **think** you're covered. The rest is pretty much make a spot-on, detail-for-detail representation of the character, then Thomas (LMO) will chime in on the readiness to approach council or whatever (i actually dunno the process, just presuming).
Expect high level of critique, but out of nothing but us wanting you to present the best. Mr. Peck got critiqued up & down, revisions made, and after all the hard work, adjustments, etc....we have an approved Starkiller...so it's definitely achievable. Know that hair, scarring (Thomas gave good recommendation earlier in thread), and everything else shy of contacts (health implications) need to match as well.
I'd be pretty stoked to see this come to fruition too.