Very unusual circumstances I think. 

If the units are unusually large I might bump that up a bit.

The apartments were going to need new carpets (the old ones were very dirty and worn, which is not unusual), painting throughout, and a thorough cleaning. 

Sometimes Airbnb guests find it unusual, so you may lose some potential bookings with the requirement.

We do one month rent for security deposit. 1.5 months would be very unusual where I am.

We are working with a real estate agent but I am curious on others opinions as this situation is so unusual. 

It’s a fairly sophisticated operation, with an unusually long time lag between first identifying the unclaimed funds, tracking the beneficiaries, obtaining a contract from said beneficiaries, gathering all the documents needed for “proof”, dealing with numerous government agencies, and finally hopefully having your client receive the funds and you getting paid.

Lots of old properties where I'm at, so it isn't unusual to expect $10k+ of capex out of the gate for water heaters, putting in central air possibly, and other old property issues.

It is unusual for them to return a surplus.

I recommend sitting down for an hour and learning how to develop a simple model in Excel yourself.When looking at properties you will often time have edge-cases where there are unusual sources of income and expense that might not fit in a calculator like this.