Comment Do you want to be a developer, or be in IT? (Score 2, Informative) 918
I don't know that Computer Science classes really prepare you for IT... one is developing applications and writing code, and the other is managing computers. Many, many people in lower-level IT positions don't even have bachelors degrees... they have associates or often less than that, but have gone to trade colleges or done some studying and gotten their MSCEs or other certifications.
If your heart is in computer science, then go for it. Go to college for 4 years, write a lot of code (really... many places when interviewing for entry-level positions with bachelors candidates will ask you how many lines of code you've written), really understand CS and a couple key langagues or paradigms (e.g. OOP or REST or whatever they're teaching now... I'm older than you
Again, IT is different, and who knows how IT in 4 years will look compared to IT today. I don't think 35 is too old for an entry level position... the key concern about age is desire and the ability to work. Few people at 25 have a wife and kids and other associated "lifestyle influences" to prevent them from regularly working 10-12 hours a day. People in their late 30s have all manner of excuses or other distractions they may deal with in entry level positions.