Applying Graduate School At 18/19

"Furthermore, to all that will advise me to wait a few years and then try to get an MBA, I personally do not know if it is worth it later in life which is why I am attempting to get it now. An economics major with 10 years experience in the DC Area can make 125k-150k easily, and I wouldn’t be able to justify quitting a job and packing up my life at that point. "

  1. Nobody is telling you to wait 10 years. "Apply now" and "apply 10 years from now" aren't the only options.
  2. PT programs exist.
  3. Have you looked at the career progression post-MBA?

“I know I meet the GRE and GPA requirements but I am worried that an admissions officer will see my age and immediately reject my application.”

Very likely what will happen.
Why the GRE instead of GMAT?