How many bottles do I need?

My wife and I have gone around collecting different baby bottles like Hegen, Avent and Tomme Tipee with varying teat sizes the past months. We have so many bottles now but I do not know in reality when the baby comes, how many will we actually need for each teat size. We probably want to standby the different brands in case LO does not like a particular one, so would you recommend that if he likes a certain brand we just stick to that bottle and teat? If so, how many bottles/teats do you guys have for each stage? eg 3 teats for stage 1, etc. thank you!! #firstbaby #firsttimemom #advicepls #firstmom