I bottle fed my first and then bf my second 2 - just be aware that the first few weeks can feel a lot harder, but it totally pays off as it then gets SO much easier! Especially with 3 to look after, you can pop out and about without worrying about bottles, and doing at alone (you are a champion btw), you can just bring the baby into bed, feed lying down and doze together (though make the bed cosleeping safe first, of course).
I tried ebf dd with a bottle at 4 weeks and she took it well but I didn't try another until about 14 weeks and she refused completely (oops), ds2 i have done a bottle a week (expressed breast milk) from 4 weeks and he's been fine with them, though it took a few different bottles before he found one he liked.
Some people have luck doing both from week 1, but it does increase the chance that you won't stick with it, partly because of nipple confusion but also because the first 4-6 weeks of bfing ARE usually tough and if you have an alternative that you know well it might be very tempting to throw in the towel. There's nothing wrong with that either, but if you want to try bfing (and in my experience it has been great), give it a few weeks of bf only first 
Also it's helpful to get out to a few la leche league groups in advance, people are really supportive. And hopefully you'll have an extra pair of hands to help you after the birth and to give you food while you do the evening cluster feed!