Cool yaustar, I'm thinking it would be rather difficult to sell it alright, unless I got lucky. Or had some kick-ass, never-seen-before imagery and ideas already coded.
Nope it be difficult even if you had that. Your best bet is to hit the mobile phone game industry.
The language that will be used will entirely be dependent on the target platform as well as many other factors.

Completely forget about using Lua as your main langauge. It will simply not work with game you are thinking of.