They all have their pros and cons and you will never find the perfect one. 

Often with a solo(k) the structure will be something like this, the financial institution will provide you with a 401(k) plan document and adoption agreement, you should be able to select certain plan defaults.

My business partner and myself have been attempting to separate for well over a year, waiting on properties to sell.

When it only covers the down payment you'll have to keep in mind that your numbers will be tighter than other investors that are making a full down payment. 

If someone injures themselves and sues, they will be suing the LLC and not you personally.

I completely agree you will want to see what features the high performers have that makes them stand out and earn more, that is also included.

Any input or advise you can give me will be greatly appreciated!  

However let me know what marker and and what questions and I will do my best to help. 

even if its the owners they might still be willing to pay. 

There will be lots of multifamily investors there