I get this feeling, but you really should take the GRE. While I can't directly quote specific people who run these programs, I can say that the GRE for an MFA writing program seems to be something that is required by the school. While the program probably would like to know that you aren't a complete slug re: English language, I don't think your GRE score matters that much to them. I say this because I got into a grad program, and while my score was above average, it was nothing to sneeze at.
Also, I don't think there are "throwaway years," to just apply, so you can get rejected and reapply next year. First time applicants get in all the time. These babies cost so much money and time; don't throw it down just for kicks!