Security deposit amountYou can find plenty of examples by searching for "tenant estoppel certificate doc" or exchanging "doc" with "pdf" for more options.Here is an example and explanation: Sample EstoppelSome have a lot of legal jargon but this document does not need to be so detailed.

If I am thinking about right, do we have any expert who can give some guidance/ sample on language to be used?

Any sample card if anyone has it?

An exercise for you is to change this phrase "...knowing that my real concern is their inability to pay the rent due to maternity leave" and substitute "maternity leave" with "being X" where X is another protected class based on race, gender, ethnicity, etc.

If you search hard enough you can find a sample for most of them. 

They had pretty graphs and data, but instead they cashed out your 401k and spent the money on shake weight exercise devices.

Data migration is a costly exercise and many times very labor intensive. 

You may have answers to some of these questions already, but it is a good exercise to have some clarity on those goals, then you can forge the path to get there. 

And then when you sell the property if they exercise the option you could then 1031 the property.   

I do a lot of repairs and maintenance myself when I come down in the winter and during the quarters I make the trip, but here's just a sample of things I had to pay for in the last year:Pool screening: $985 (big hailstorm destroyed 13 screens)Irrigation repair: $394Irrigation repair #2: $230Palm trimming (twice: $200Pool light replacement: $950And all of that of course leaves out routine replacement of towels that get left at theme parks, sheets and pillowcases, busted blenders, and a host of other things I can't even think of right now.