@Kendric Buford Considering a Duplex, TriPlex, or a Four Plex.

Whether it is a single family home or a 4 plex, it is still one sewer line, one roof, one gardener bill, one tree trimming, etc. that cost the same no matter what.Best of luck!

"What if" did groupings of these clusters in horse-shoe, so 3 4/6 plexs with walk-out to shared central courtyard. 

You are likely competing with a lot of unsophisticated buyers who have money and hear owning a 4 plex is a smart investment.5.

Similarly, if you put several Class D tenants in a Class A 4-plex, what do you think will happen to the property?

When you say your house hack phase has passed, are you saying you DON'T plan to occupy a unit of the 4-plex?

I do think you need a separate entrance option or at least two entrances in a four-plex to make it easier on the LTR tenants, but if you are open about it form the start, everyone gets it and you choose the unit composition based on which ones will be STR or MTR.

Similarly, if you put several Class D tenants in a Class A 4-plex, what do you think will happen to the property?

Similarly, if you put all Class D tenants in a Class A 4-plex, what do you think will happen?

I believe it was said in James Bond movie, Casino Royale "It's not about the money, it's about knowing who you can trust".