Rob congrats that's wonderful. Twins!
You are important in my NSX family, because your NSX was the first one I ever actually drove and your generosity in helping me with my search, and candid advice to steer clear from that dog of a car we looked at landed me with my beloved Berlina Black 91.
If you're not driving the car and you think the money would help your twins, then yeah you should sell it. I was thinking about selling my 91 to do the same thing for my little girl (due in Nov), but my wife actually convinced me to keep it. She reasoned that the NSX was my passion and hobby and while our new little one would take up a lot of room in our lives, that doesn't mean I have to give up my hobbies for good. Will the car sit in the garage more often than it does now? Yeah. Will I do fewer track days? Yeah. Will I not be able to spend time and money tinkering on it like I have the last few years? Yeah. But, when I do get a free moment- it will be there waiting for me. She makes a good point.
Since my refresh, I daily drive my NSX now, so I get to enjoy it every day. You live in Florida, so you could just make it your daily car and keep the SUV for the kids. That's what we did.
Anyway, if you sell it, I am willing to bet dinner you end up with another one. And, if you do, you must post your penance on the "they always come back" thread. Good luck and congrats again.