You would have a real estate lawyer write up a mortgage document to reflect the rate and term of the loan and the title would be transferred to your name. 

Confirm that the IRA LLC provider will prepare all of the documents needed to not only form the LLC (articles of organization, SS-4 to obtain an EIN) but also the documents needed by the trust company to process the investment of IRA funds in the LLC.3.

There a few good books on the subject and also very good online documents with most self directed providers.

In preparing all the documents for the sell, the Closing Agent will generally have the title transferred back into your name.

Rates higher than traditional and if you buy fix then go to the bank make sure you have all documentation on what you did to the property.

You can find more information about that here:https://www.biggerpockets.com/membership-typesIf you don't want to do that, if you own/buy an Adobe editor you can create your own editable fields, then use an online document signing service to send the lease to your tenants to sign electronically. 

You could start prepping the lease the rental documents in the mean time.  

An addendum is an additional document to the original lease.

I document it with some basic pictures to document the condition at that time.

The document doesn't show a date that I can see.