Flight instructing was probably the biggest favor I did for myself too. You'll learn more about flying in thos 1-2 years, at least in my case it was 18 months, than you did the whole time you were working on all your ratings. What I found was that my flying skills were increased 10 fold....although you sit and watch your students for the most part. Your scan and stick-n-rudder tehniques will be top notch. I left flight instructing to go sit in the right of a BeechJet, with my whopping 75 hrs of multi. I ended up a few hundred hours of ME time, however, all that time was good for was to get me an interview at a regional. Doing that and just that alone probably would not have gotten me through sim training, since all my "skills" came from instructing earlier on. Just my own personal experience, FWIW....
Good Luck