Stef, Even the MEI could get you an immediate return, in making the cut for a job. Why not seek a job with only an MEI, not an instructing job, but a flying job. As you will discover it is a significant undertaking and also demonstrates a real commitment to your future employer, not to mention the knowledge and new skills and abilities you will gain. It is a bonafide CFI as any other. Anyone can get a Commercial, Instrument, Multi given enough time and money; not really the case with becoming a flight instructor. BTW, What twin would you plan on using?