Use the lookup function   Use my name and look up  LLC operating agreement    Then “what happens if you die?”

They don't care about the extras - they want the basic stuff that's clean, functions and looks decent enough. 

Some yahoos like one of the dozen or so Yardi iterations, but I don't get those folks so I'll pretend it doesn't exist.There is a whole different class of PMSs like RentReady, TenantCloud, Hemlane, etc that CAN be used to do some or all the things you'd prefer, they just won't function AS well for as long as the pro-grade PMSs listed above.So, if this is a side hustle that you'll dabble in for a while and then hop onto the next shiny object that walks by, I'd go with the cheapest or best UX/UI you can find in the second group.IF this is a business that you intend to keep getting better at and pursue with excellence then I'd cut right to the pro-grade PMS and learn to use it masterfully.

From a legal perspective, nearly every function you can think of is a separate legal entity in order to solo liability for all parties involved.

While good PMs do their job, and serve a function, they do in the end cost more than just their normal estimated 12% fee cost( 1 month lease up and 10%/mo).

Well, if they are fully functional on a slab with plumbing, HVAC and electricity, then they are a real asset with value.

Once you have a short list, get an account with each one and run them through the wringer to see how they really function.

I feel like $80k-100k is the cost we were coming to when we considered rebuilding the existing stairwell to the basement to a more functional one along with rehabbing the current rec room to an insulated space.

You are searching for a place to live, that is the primary function. 

If you do purchase a property with a septic tank, you can have it inspected and pumped so you have a baseline that it is functioning correctly if the seller cannot give you any history on it.