X will be determined by what ever return you're demanding.

Water could be individually metered to add another $6K a year.

I think your first move should be to get your financial situation a little more stable, which should be fairly easy for a college educated individual in this economy.

In this circumstance we are looking at having the individual prepare lists from using the local circuit court access website, mail envelopes, and receive and filter calls. 

Unless that location is in high demand at the very least you'll be experiencing a month's worth of income loss. 

If you don't know the lease status yet, this would likely be step #1 for you.Depending on your goals for the home, having tenants in place may be a positive for you since tenants scare away some buyers, leading to less demand.

Usually seller demands big upfront payment and could care less if buyer follows through or defaults. 

So far we have 19 units and have done the individual key per unit thing.

What a base hit vs home run is also will vary for every individual, but if you don't play you'll never win.

There travel destinations just change (demand shifts).