To the OP,
If you truly want to go for an MBA degree, I highly suggest doing so.
I'm currently in an MBA program. My former educational background was in science. I absolutely love the program. I'm not in a top tier program, it is a local school that is easily accessible to me after work. The whole program costs me about $55-60K, but I think it will be absolutely worth it. My social life is non-existing, but I don't mind. Between school and work, I'm pretty swamped.
I feel somewhat like you. I'm not stuck in middle management, I'm just starting out my career. I'm 26 years old now. I know I can earn a nice 6 figure income in this field, but I have a yearn to try "this business thing" out.
Please keep us informed on what you decide to do. Best of luck to your future endeavors, my friend!