My concerns are that the split payments will make it more complicated. 

Two thoughtsFirst thought..... with all the laws and complications of evicting existing tenants when you buy a place, I wonder what the ramifications would be if AFTER you sign all the paperwork to move in and you make an honest effort to evict the designated tenant, it is realized that it would place way to much hardship on that tenant and it becomes very clear that they want to stay in the property?

An NPN in a judicial foreclosure that has judgment should be worth a lot more than one pre-judgment where you still have to jump through hoops and take the risks of additional delays.

It probably does not get much more complicated from 1 property to 25 if you have all your numbers together for them.On the legal side, I am not sure an LLC is the best move for an SFR or two.

Of course it is important to be clear, but do not over complicate your points.

@Tony ArdisonYour deal is more complicated than the standard sale of an established mobile home park with stabilized rental income. 

But, it wouldn't be a complicated process. 

@Evie Marzec  This may sound like a complicated response but it's not and others's may have different methods to help make decisions in their business, but I would run Net Present Value (NPV) calculations for multiple scenarios of cash flows over a specific time time frame to help make a decision on what strategy to pursue.  

If you are occupying the four-plex it gets a little more complicated."

There are a lot more complications when you bring a business partner into an LLC.