Bottles, breastfeeding 😅

So I have four months left till my boy is here and I do want to breastfeed for at least the first month, either way I will be trying to breastfeed straight away but I also don’t want to. I’ve heard so many horror stories, from as horrific as accidentally falling asleep and suffocating baby to the more simple but still scary still breastfeeding at 2 years old and biting of the nipples so I really am not sure which I’ll decide to do but nonetheless I want to buy bottles. My mum says buy whatever bottles you like but that doesnt do it for me, I want him to have a nice bottle that won’t be huge but it’s like how will I know if the teat is too big for his mouth until he’s here? So the question is should I buy a variety of bottles, with different tests? I just want everything bought by 34 weeks.