It sounds interesting. Because of the high amount of failed mods we became a bunch of skeptics, so it would be cool if you could show a demo of some sorts for us to give feedback on. Screenshots are also appreciated.
Could you elaborate on the "mental problems"? This could be very interesting if you work it out well.
About using other pictures, two concerns. First is obviously copyright, though you'll have to see what your stance is there yourself, it can be a complicated mess. The second concern is that you want to achieve a consistent look, otherwise elements will not fit in which breaks immersion or even plainly look ugly which you usually don't want in a game. I don't know how much of that is the case here though. But yeah, graphics are kind of a problem for most mods it seems.
The metal things you wear to punch things are probably brass knuckles?
What's with the farming tool?