Congrats on the NF...
I've got a 5-1/2" 44 SPL, and I'm quite fond of it. Frankly, I think the NF is a "class act" and most are reasonably priced.
You, however, got a heckuva deal, so double congrats!!
For me, the good sights are a boon to "old eyes" and, it's still a Colt single...