How do I create a seamless transition of management for both myself and the tenant? 

As to your question, Fannie Mae has notes and mortgages for download on their website.

I recently subscribed and it downloaded episodes 6-15.

You can get to it by entering biggerpockets.com/portfolio.I just downloaded a current pdf so that I would have something to build on if they get rid of it though, since it looks like they might not intend to keep it around.

It auto downloads all your banks and credit card transactions and allocates expenses per property and reason. 

You want something that seamless integrates with your tax preparer. 

And you've joined one of the best communities for all things real estate investing.1️⃣ Download this ultimate beginner’s guide: https://assets2.biggerpockets.com/uploads/user_file/file_object/1694/UBG_2018.pdf2️⃣ Read BP beginner books on investing: https://store.biggerpockets.co...Also read, Rich Dad, Poor Dad by Robert Kiyosaki3️⃣ Subscribe to BP podcasts or YouTube channel and watch their webinars. 4️⃣ Ask questions here on the forums.5️⃣ Visit (join) a local (and legit) real estate investment association.6️⃣ Consider joining a BP bootcamp: https://www.biggerpockets.com/blog/real-estate-investing-bootcampsI wish you all the best in your investing journey!

You may wish to google "Seller Finance Consultants" and download a FREE Dodd Frank compliant disclosure to include in your owner financing paperwork.Please read ----> Home Selling Methods Banks Do Not Want You to Know About:https://www.linkedin.com/pulse/home-selling-method...

(Note: The Survey link will download the report.)What I found interesting was the info below. 

If I was you I would download a purchase and sale contract template online and rock with that.