I was wondering if "mstcorefonts" (or is that what you looked into already?) were under liscensed to be usable in the game? I never looked into it, but its a package for most linux distros that is free, if not, what about the many linux fonts?
I do like your font, its clean, but I'd have to see it in the HUD to really see how it would work out, right now its a non-bold font that may be hard to see in the hud/console.