They will be able to hold it for up to 180 days to give you time to sell your old property.The complications with reverse exchanges and lending is exactly what Bill asked. 

I’m billed quarterly in Las Vegas.

In each category, note how much you are bothered or stressed on a 1 to 5 scale, with 1 = not bothered at all and 5 = stressed out: Pain Points Stress1 to 5 Pain Points Stress1 to 5 Unit turnover Exterior maintenance Advertising for available units Deferred capital expenditures Tenant screening rules Plumbing or electrical emergencies Tenant selection / discrimination rules Mortgage payments Documenting move-in conditions Bookkeeping and bill paying Documenting ongoing conditions Taxes and insurance premiums Dealing with tenant complaints Risk of late payments or non-payments Dealing with neighbor complaints Risk of property damage or vandalism Mold, termites and rodents Premises liability Interior maintenance Evicting tenants If your completed table has mostly 1s and 2s, then congratulations—you are a happy landlord!

I have minimal plumbing experience and thought it would cost me way more than what the actual bill was.

(M2M Lease)A couple days later Tenent texts me and says they have left the property effectively today (bf doesn’t help out with bills, drama, etc). and wants off lease. 

I will just have my bookkeeper bill a flat amount monthly from Jan 1st on. 

Right now, I'm buying T-bills and bond index funds. 

Well right off the bat if you're interested in wholesaling, and you're in Maryland you should familiarize yourself with House Bill 301 which is likely to pass.

Quote from @Miguel Del Mazo: It basically says that if the electric bill is twice what the same month's bill from last year was, the overage will be charged as a fine.That's a good barometer actually.

You can bill them for the issue but getting them to pay is a whole different problem.