I believe that the only benefits of BFing vs. EPing are convenience for mom. For triplets, this honestly might not exist anymore (having never experienced multiples, I don't know the answer to this).
I am glad that I worked to get my LO back on the breast because by 4 weeks of age, it was far easier for me at night to feed her directly than to pump and bottle feed her (but the latter was easier and faster until she was 4 weeks old), and it is far more convenient when we are out and about to not have to find a place to pump. I also hate pumping now (it did not bother me in the first 4w, but does now that I do it daily at work), and I'd have a much harder time sticking to a year if I were EPing.
In your situation,though EP might be a reasonable solution.