I haven't had any issues with breastfeeding (I'm one of the boring success stories) but I do believe in taking the option of least stress so you save your sanity. Breastfeeding alone isn't that path for you.

If you have to top up, you have to top up, its not the end of the world. If you don't want the risk of bubs preferring the bottle to boob and dropping the boob completely too early, why not get one of those feed line things where you have a tube next to your nipple and bubs gets formula and breastmilk at once? That might stop the screaming after feeds and make everyone happier.