100k??? That's a TON of money. You could pay it off in a lifetime pretty easily (if you get even a mediocre job) but you'll be in debt for a long time.
Find a cheaper school or go in-state. I recommend University of Arizona - they're highly ranked for almost everything (many engineering disciplines, not sure about computer but I'm pretty sure they're top 30-40 there) and will accept almost anyone. The best part is that they're DIRT CHEAP, even for out of state tuition. I went there for in-state and it only cost about $5k per year and I believe out of state was only a few thousand more. You could probably get away with 40k, including rent (Tucson cost of living is dirt cheap, it is 100% a college town).
Combine hot girls with warm weather and you've got a winning combination. It's also cheap and a good school. The only problem is that while they will accept almost anyone, every major has a few weed-out classes and the freshmen retention rate is really low due to the difficulty. It's not a hard school by your standards or mine, but it is a hard school to those kids who just barely were able to get in, and in the end those kids either drop out or go to an easy major. It's also hard on the sheltered kids who can't deal with partying and academics at the same time. I'm in grad school now and near the top of my class (first year Physics PhD program).
Like mageslayer said, your undergrad doesn't really matter if you want to go to grad school. If you want to start working with your Bachelor's, any top 50 school will do if you work hard and do research (as in working for a professor). Again, I recommend you look into U of A
There's also the community college option. Live at home for 2 years and get your core courses out of the way for cheap. You'll save a lot of money on tuition and not having to pay rent. You should only need 2-3 years of university education after that, so you'll be saving a lot of money.