The information contained in this post is not to be relied upon.

it costs $798 to replace the ceramic top.

As a preliminary matter, why would a buyer make an EMD on a contract that contains a material (price) error?

You were somewhat warned because the real estate contract said "may contain lead".

The kitchen and first-floor bathroom contained the original fixtures.

For example, if you are looking to connect with other members near you, want to learn from people in a specific area you’d like to invest in, or have a desire to find people interested in certain topics, you could use the search feature here: https://www.biggerpockets.com/search/usersI really like the alerts feature that can quickly guide you to current topics that may be of interest: http://www.biggerpockets.com/alertsThere are a few self-contained guides that you can access here: https://www.biggerpockets.com/guides

The information contained in this post is not to be relied upon.

Cargo containers are less expensive now.  

If I do get an agreement what should the agreement contain?

These platforms include RentRedi, Stessa, Avail, Innago, Apartments.com (formerly Cozy), and TenantCloud.Pretty much every platform mentioned contains the features you are going to need.