Hi @Akston Pots, I agree with @Omar Khan on this one.
Although you can do FSBO, it will limit your buyer pool. In Los Angeles anyway, most buyers of an 8 unit property will be using an agent to manage the process. It is not uncommon for the Buyers' agent to request their commission be paid by the seller if an offer is accepted. Many buyers will not buy a property, no matter how good the deal if they can not use their agent. And those who will go for a FSBO expect to get an amazing deal since they know the seller is not paying broker fees. In my market anyway, most sellers get significantly higher offers when they are properly represented, more than making up for the broker fees.
As I am sure you're aware, there is a lot involved in selling a multi-family property. Property vetting the buyer is a big part, if this is not done properly the buyer could tie up your property in escrow and still not perform. My suggestion would be at minimum sit down with a local Realtor and discuss options, such as a pocket listing and an exclusion list if you do decide to eventually list.
Until then, I would suggest creating a marketing package with a rent roll, expenses, etc. and market your property as much as possible, this is what your agent would do. You could list as FSBO on most platforms like Zillow. Contact other investors in your network and ask them to also get the word out. When you receive offers, be sure to properly vet the buyers. Hope this is helpful.