Anna, if your feature runs 80+ minutes, I think you could call it feature-length now rather than a "two-reeler" or "three-reeler". I noticed two B- and A-list Hollywood efforts among the recent releases that came in at 81-83 minutes only. More that tilted the scales at 90-93 minutes. You may remember Jurassic Park III (my informal working title: Please Eat Tea Leoni!) a few years ago; that one was timecoded at 93 minutes.
Best of luck, Anna, and like they said -- "break a leg!"
Courtesy ping. And good-luck ping and mash-note ping and you-done-good ping.