Conventional vs FHA mortgage

[Endo Na]

First time buying a home and looking to purchase a 4 unit multi-family owner occupied building. My plan is to live in it for a year do repairs then purchase another and do the same.

I have enough for 20% down but weighing options if I should go for a FHA loan and have spare money for another multi-family purchase.

I'm very new to all of this and was hoping for some guidance.