Congrats and welcome. There are at least 3 NSX's in S.L. I have a yellow '99, I have seen a red one here and now yours.
I just registered mine. You'll need to get it inspected, which requires an insurance card. I had no sales receipt so had to have the PO sign a form that I was given form the tag office. This is the 6th car I have brought in from out of state and each time it is a little different.
Mine is in getting a clear bra and window tinting until tomorrow afternoon.