How did you manage this? Pretty impressive, considering that they're not actually supposed to be able to do that.... good find!
In any event, I doubt that you will be able to use your imp stat icons, but I'm not sure: as I said before, this whole thing is supposed to be impossible. If they display, please tell me! If not, then you will probably just see the "generic" icon. I really am not sure what you mean by the map updating: is it the icon colors? The minimap? In any event, I would use the hoteast mode to test out #3, but my hunch is that you would be unable to colonize any further planets, but keep the ones you had.
I would be very interested to see how you pulled this off.