If you read a lot of the other postings on the forum, you'll find that it really depends on what you're looking for. If you're really trying to save on money, go for the local, state university. It really depends on what you want to do. As long as you feel like you're going to get outstanding grades at the local university-- go for it.
Otherwise, a lot of the programs you've been accepted to are rather cutthroat (personally, that's the impression I've had from reading through forums and seeing the stats.) Columbia in particular has quite the attrition rate and reputation. However, if you can guarantee that you'll do well against the curve, go for it-- as they have a lot of linkages. Though I've heard from certain people that if you go to Columbia, you might as well go to Harvard Extension for the money. Honestly... it just depends on what you're looking for from a program. Do you want hands-on advising? Do you want a small program with a good community? Is it all about tuition for you?
IMO, it sounds like you're pretty set AND your mind is leaning towards the at-home option, so why not go with your gut?
