Need some advice on a career change

This is obviously long, but I appreciate both the time any of you put into reading it and any advice you may have.

A little background...

I am 24 and I work for a large regional bank as a financial advisor making about 85-90K/year. I started immediately after graduation and I've been here roughly 2.5 years. I have my Life & Health license, Series 6, Series 7, and Series 66 licenses. I am considered a junior advisor and I work under a senior advisor who grosses approximately 275k-300k/year. I do not mind my job, but it does not excite me in any particular way either. I thought I would be comprehensively managing the assets of clients and what not, but bank clients tend to be extremely conservative and mostly illogical, so I find myself "selling" more than "advising". It does not strike me as something I want to do forever, but it certainly is not an issue in the short to midterm. The biggest long-term con that I have is the liability that it entails. Clients tend to have selective amnesia and unfortunately in this industry it seems you are guilty until proven innocent.

I have a business admin degree with a concentration in general business from a Southland Conference school here in Texas. I have no kids or spouse, but I do enjoy the area where I live and would not mind being here long-term.

Here are my options-

A) Within the next 1-2 years, I've been told by my sales manager that I would likely get my own territory as a senior advisor. We have a nice program and most senior advisors do 200K+. Our territories are firmly established and I would not consider it difficult to generate at least 175k/year. However, not knowing what territory I may get, I may not like where I have to move.

B) The current senior advisor for whom I work will likely be retiring in the next 5-7 years. This is a coveted territory, and if I stayed here as a junior broker during that time and firmly entrenched myself with our clients, I would be a shoe-in to fill the senior role when it becomes available. However, if I was a senior advisor elsewhere for 3-4 years and tried to come back here, I would lose that "continuity" edge and would be up against a few other qualified senior advisors. If I stayed, it is highly probable that I would be making 275k/year by 32, but I my income would be relatively stagnant for at least another 5 years.

Note about Options A and B: Although I do work for a prominent and profitable regional bank, there is always a buzz that we are a top acquisition target for some of the national banks. Outside of Wells Fargo, it is generally agreed that most of the other possibilities would be detrimental to our financial service program as we know it. The possibility of that happening weighs on my decision as well.

C) In 2009, before my senior year of college, I took the GMAT and scored a 740(40 verbal, 50 quant). I graduated with a 3.3 GPA. The GMAT score is valid for 5 years, so I could use that score for enrollment up to the Fall of 2014. Getting my MBA would be mostly useless if I chose to stick with my current career path, IMO. If I pursued an MBA, I would like to do so full-time. I have whittled down my list of schools to Duke (Fuqua), Virginia (Darden), Texas (McCombs), Vanderbilt (Owens), and SMU (Cox). If I went this route, I would like to focus on finance but I do not have a particular career choice once I graduated.

D) This is the most drastic of the options, but it is one that I am most interested in at the moment - going back to school to major in petroleum engineering. I'd be interested in going to Texas, Texas A&M, or LSU. I do not know much about the enrollment process for someone who already has a bachelor's degree, but I have always been strong in mathematics and I would welcome a challenging curriculum since neither high school nor my first degree has posed much resistance (despite lackluster GPAs ). If I went this route, I would likely get an EMBA after graduation.

Ok, so there you have it. Ideally, I want to be compensated well for a career that is challenging yet enjoyable, and I would like to minimize the liability/stress that I incur. I'm sure we all feel the same. My current path seems to have the compensation and is somewhat enjoyable, but is certainly not a challenge and there is plenty of liability involved, but what should I do? Are there any other options I should be considering?

TIA!