tmaxx

I have a 2017 Fusion Energi. We are taking it on a long road trip and want to take our bikes. I don't want to use a trunk mounted rack since it may cause damage so I am looking into installing a hitch and bike rack. My question is around what capacity I can use. 1 1/4" or 2" receiver, 2, 3, or 4 bike rack. Please share you guidance and experience with this sort of setup. Also, recommendations on brands would help. Thanks!