Pro:cheaper to create and maintain (state fee) You can have multiple child LLC on shelve ready to be used for no cost.You can in theory have only one bank account for all the LLCs and only separate them on paper with excellent bookkeeping.Con:Not recognized in all state, and interpretation of their separation may vary in foreign jurisdictionRelatively recent and not a lot of case lawSpecific operating agreement needed and not all lawyers are very familiar with itMay have some issues when dealing with title or banks who are not used to them.May lower some of your anonymity as will link all the series together.I do have some series LLC and also some vanilla LLCs.

If it doesn't work out at least you recognized a pitch and swung at it.   

We were also named Boston's top startup of 2019, and to HousingWire's Tech100 list, recognizing the 100 most innovative technology companies in the real estate industry. 

Also, when I do claim the rental income on my taxes, I'm told only 75% will be recognized.  

Take the time to do the homework and to market your offer in a way that the seller will at least recognize it, accept it or counter.  

Of course we intend to put 20% down on the property, but I recognize that a lot of investors pay for properties in cash.

I do recognize this can simply be purposed omission of the details by the OP, which then I am reading too far in.On the other hand, perhaps there is not what most would consider a reasonable understanding of the loan, the use of the funds and how to protect the investment for repayment.

That's always a hard thing to recognize up front. 

However, I recognize that some FHA loans and VA require at least 1-year residence.

I would like to partner up with you in a startup  Well you have a talent recognizing talent.