Wow! That's a ton of questions.
Let's start here. Accounting is an outstanding profession, but it isn't the most exciting. You have two paths to choose from: Public accounting...where you will work for CPAs and do taxes for personal and corporate clients. Option number 2 is corporate accounting where you will do AR/AP, Payroll, creating financial statements, etc. My personal recommendation is to go for the public accounting job because corporations are the clients. Once they see a competent tax accountant, they try to recruit the person...and the CPA is cool with that because now he has a contact within the corporation.
But let me get to what I really wanted to talk about. The decision of where to go to school matters. If you get your undergrad from Devry, or UOP or one of non-traditional schools, you will have a more difficult time being hired at one the big 4 tax firms. Once you have your master's that will ease up...especially if you get it at a traditional school. It matters.
You can't go wrong either way with a masters in Accounting or Finance. It's six of one / half a dozen of the other. Just make sure that you get your required 150 units to qualify you for the CPA exam.
Let's talk about that for a minute. If you get hired on a big firm, they are going to work you to death. 50-60+ hours during tax season. Get ready for that. But in return, they have the tools to study for the CPA exam, and if you pass, some companies pay the bill. They won't do it if you fail, though.
Good luck. Let me know if you have questions.