I would suggest that you post the same query on the Assistance desk. It becomes very difficult if each PGite starts a new thread for his/her query. Please do not take this personally but I hope you understand the point I am trying to make. I clearly understand your anxiety but it would be better for you as well as other members of this forum if you post your queries in relevant threads
Anyways here's my 2 cents on your query hope it helps (First of all each persons requirements/aspirations are different so please take my advice in view of your own personal goals in life)
1. Securing an admit into one of the top-10 schools inspite of the debt is worth it. Having spoken to scores of people over the past few months I think it is worth the money to get your MBA from a top school. Please remember that you are only going to do your MBA once. So there is no point in thinking later that you could have done it from a better place later!
2. A scholarship always help to make things easier post-MBA. But it should be your personal call because I don't know your financial situation. I am sure that since you are in US finance is not that big a deal for you as of now.
3. I have no clue about the part-time MBA programs so maybe other PGites can help you out here.
4. This option is by far the one I think you could choose (again it is just my view). You have just worked for 2.5 years. Your work-ex is anyways low for a good MBA school (not that people don't get in with that kind of work-ex). You are young and have your life ahead of you. My suggestion is work for another year. Build a great profile. Participate in community service. Do more things that will add value to yourself and of course to your profile so that you stand a better chance at top-10. Remember the top-10 schools go much deeper than you GMAT and GPA. They want people who have done significant thins in life. Also taking another year to decide will help you to research more and talk to more people. It will help you get more inputs on not only different schools but also different programs (like full-time, part-time etc.). It will also help you write good essays and recommendations. Most importantly it will help you take sometime off and choose the best program and best school for you. There is no point in applying out of haste and not doing justice to your applications or worse still getting into a program or school you don't want to be in!
All in all I think one year of good research is what i think it takes to decide on the best school and program (thats what I did

). However if you are inclined to apply this year then go for it! Take sometime off work, skip the Christmas vacation this time and start researching on schools and start writing your essays. Most programs will have their second round deadline in the first two weeks of January (and quite a few have deadlines later as well, check the websites of the schools that you are interested in). Take a break from work till your apps are over. I think it is possible to complete a few apps before the deadline dates.
Hope my thoughts help you clear you confusion rather than add to it
Keep me posted if you need to know anything about universities. I can atleast guide you for the schools where I have applied.
CHEERS!!!!!