If you find you are unable to raise the money for an all-cash purchase, switching gears to Fannie will only work if you have a LONG time to close in your PSA or have many extension options (which usually require more hard earnest money.)

Otherwise, I recommend option two, using a personal loan.

We want to know the best TRUST option, We have 3 rental units in North Carolina and each one of the units is on their own LLC.

If you do go the seller finance route, consider asking for a right of first refusal option in the event the seller ever decides to sell the note. 

I found myself overwhelmed with all the options.

But there’s another option that’s often overlooked: mortgage recasting.

And countless other options.

Two best options are house hack or sell and acquire a 1031 property.

Once I get the homeowner to sign the assignment,  do you want to be the first option to review the numbers and possibly buy ?

Yes, this is an unsexy option and it doesn't offer the same tax benefits, but you would benefit from reduced volatility (so long as you don't obsess over fluctuating stock prices), greater liquidity, stronger management teams and superior assets.