I'm new. Is this too much to bite off immediately?

Uzoma here. Just getting started. Interested in using a buy and hold strategy for multifamily units. And right now I am looking at a Multifamily home -- 4 units in the house. Pulling in 6350 in rent combined. All occupied. They are asking 896K. There may be flexibility. How should I do the math on this? Trying to figure the numbers before I start thinking about financing. I also wonder if it is too big for my first deal but something keeps telling me to not worry about it as long as the numbers work. Thoughts? And thanks in advance.