JorjeM, don't buy new window regulators / motors! If they are moving, they are working. The NSX windows don't move up and down very quickly by design. Cleaning and lubricating the window guides should restore them to normal speeds (which are not fast by any means, but better). It's a PITA job as the rails are somewhat hard to reach and you have to take your door panel off.
If your mechanic knows how to do it, have him do it. It's illustrated in the service manual as well (not very clearly, but it's there).
The rest of the items are known issues. Search around and you'll see. If you can make it on Friday, we'll chat!