They said they can close in 3-10 days, so you sell property A and the 1031 escrow account transfers the money to the DST deal of your choice very quickly.

I have added this and will continue to do so for budgeting.The more expense unit has one tenant staying and the other unit I feel confident I can rent quickly via listings on Hotpads, Realtor and Gosec8.  

But one issue that you may run into is paying two transfer taxes.

what you may do is purchase conventionally then transfer to a land trust.

If it has a current mortgage, would I be better off contacting the bank to take over payments and transferring the deed into my name?

There are other companies who transfer title prior to the home being complete or having a tenant.

He said as long as the title was transferred even thou the liability was still on the original owner, he said that 100% its his house and he didn't have to worry about the mortgage under the original owners name as he would maKe the payments himself on behalf of the original owner.

I've heard that conventional loans prohibit this type of transfer activity; does a lender have any recourse if you transfer this loan back to the LLC?  

The only prorated exceptions for 121 are a very limited selection of health related or job transfer related reasons.  

Should i transfer business profits to my personal account?