1. Finish your BS before looking for jobs or moving.
2. My wife has her BS in organic chemistry and jobs are far and few between. It seems there would be little use of having a chemist on the payroll for a grower. Perhaps setting up your own consulting business would work best, then you can contract out your work and that may be more attractive to a grower than paying you a $60k salary when there isn't enough work for you to sit doing chemistry for 8 hours a day.

3. Havnt people been using liquid N2o for a long time now? I know C02 is more popular, and that's probably because it is slightly cheaper and the containers needed are cheaper. A portable tank of n20 (a dewar) is pretty expensive.

Have you tried it with the nitrogen? Is there a statistically significant increase in the yield compared to c02? I'm curious.