First, congratulations. Second, no, you really can't justify going anywhere else, in my opinion. You will get in state tuition at a school ranked in the 30s, plus you will get to be in Boulder. I went to CU for undergrad, and would have loved to have gone there for law school, but didn't get in. I'm trying to transfer there for next year, I'm hoping my CO residency will still have some pull.
And yes, your residency surely played a big role in getting in, plus I imagine your softs were good (I had VERY similar numbers and didn't get in last year). Just look through the applicants page on LSN for CU for this cycle and you'll see a ridiculous amount of people with numbers like 3.5/166 getting rejected from CU this year. It's pretty crazy. Personally, I think CU is trying to make a play to move up the rankings, lots of people with stellar numbers are getting dinged this year.
Again, congratulations, as a CO resident you already know how great CU law school is, and as a fellow CO resident I'll be the first to tell you that you'd be crazy to go anywhere else
I will now stop fluffing the greatest school in the world...