I have had several pc's as dedicated amiga emulation machines.
You can replace windows shell with winuae and it will seem to boot straight to amiga os3.x. I have used windows xp, removing windows boot screens, login screens and so forth.
What you end up with is a machine using windows drivers for everything, but with os3.x as the shell. This works very well. In my experience a pc of 1.5ghz or better works best for this. Your specs for this laptop are great for this kind of project.
Steven