GMDX interface customization and other questions

Is there any easy way to make the GMDX interface look more like this: http://i.imgur.com/5Qy4yjD.jpg and a little less like this: http://i.imgur.com/cnCdSin.jpg ? I want a smaller HUD and maybe vertical augmentation display.

If I want to switch the game map graphics to the original and vice-versa, how do I go about that? Could it cause savegame issues?

Now, gameplay questions. Is the game still enjoyable if I dump all my points into computers when I start it? Is it going to lock me out of a lot of things? I haven't read much about GMDX or played it much. What difficulty do you recommend for some who's played vanilla and shifter a lot? I want something in between what Hard and Realistic were in vanilla/shifter. In other words, basically like hard but with less instant deaths.

Last, I have issues with slow mouse movements. I'm sure some of it is due to how things are set up with my peripherals, but is there anything I can do in the game to make it better? I'll probably have a proper mouse tomorrow but I don't know if that's gonna fix everything if the game is not configured optimally as far as the mouse is concerned. I also fear there may be issues with running it at such a high resolution.