Anything "big" happen in those years?
I'm biased towards 4 # .org's (Even over 4 # .net's, ATM), but only if they have some relevance in regards to the year and it being a .org... For example, my 1865.org I like for American Civil War history buff reasons, and prefer it to the .net of the same (.org in quasi-development, btw).
But random #'s... need some repetition and/or a lot of 7's for it to pan out, :imho:
-Allan :gl: