One of them being you can't charge more than one month security deposit.

Your payment requirement would rule you out for us. 

There are cases of local governments delaying payment due to budget constraints.

Time remains of essence, we file eviction within 7 days of no payment.

True re the prior poster, re this helping the seller save their credit, if you buy sub-to you will dramatically raise their FICO since the mortgage will show on-time payments.  

You can live in one unit and rent out the other for little to no down payment.

However, I don’t yet have the funds for a down payment on another house, and I’m trying to figure out the best option for where to live while I rent the apartment.Do you have any recommendations for managing this transition or tips on finding a temporary place to stay?

Quote from @Mathew Chacko: Quote from @Na Person:  I too was a little skeptical of sending a large cash payment to an unlicensed entity (1031 facilitators do not need a license). 

We have not been able to secure financing and had conversations about it.

Now to the bad news: it is REALLY hard to be a 20yo real estate agent and make a living wage, let alone generate cash for a down payment.