And my feeling is for MOST people Solo 401k is sufficient to meet their needs, and an actuary creating a custom plan is “overkill”.  

Also for someone buying one house this is just over kill.. 

I also believe your management LLC is overkill if liability protection is the intention.  

I'm only at 2 properties as well, so it's a bit overkill for me, but I'd rather have the systems in place now than scramble once I acquire more units.I pay for BP Pro, so I created accounts for the free sponsored platforms they have.

That should cover you for liability unless you plan to manage the property very poorly.A trust owning an LLC seems to be overkill for a single rental.

. - https://www.biggerpockets.com/files/user/CosIorg/file/asset-protection-structures (overwhelming and overkill for a newbie in REI)PS.

Require Renter’s InsuranceNow, this might seem like overkill for just a room, but renter’s insurance is non-negotiable in my book.

Is $100/night way overkill with this length?

imho, that was very overkill. 

I feel like one LLC per property is overkill and would be quite difficult to manage.