OK, nevermind the cyberarm math... Man & Machine has all that I should have checked before bothering you fine people with it.
I came up with a nice little alpha model running only slightly under 300'000 nuyen before street index.

Now... who can the elf be owing this to?
Should I portray it as a team investment and have them all chip in (in a way)?
Or run the contract solo, every now and again demanding that player to pay this amount, or that deed, all the while building up a climatic point in which he'll be asked to do something diametrically opposed to the welfare of the team - to force him, behind the scenes, into a position of being a traitor, or incurring the bad will of his creditors.

All ideas welcome :)