Oooorrrrrrrr, talk to the seller and agree to put his name on the other property (have a good lawyer draw up papers) on a first mortgage spot in exchange for him financing the down payment too.

Email technology as it exists today, CAN NOT RELIABLY produce a Return Receipt. 

You cannot require electronic payment without an addendum to their lease. 

Low down payment, while they pay your mortgage and also you can use W-2 to work on student loans. 

If you currently have high interest rates, consolidating will greatly reduce your minimum monthly payment amount.

The Landlord must attempt to get the property occupied at fair market value, and while vacant the tenant will make full monthly payments agreed in the lease until occupied.  

Withdraw it and use it as a down payment?

Then add ALL costs related to holding the property (utility costs, insurance premiums, property taxes, loan payments, etc.).Concessions: Concessions are what you give back to the buyer at closing.

-Tenant started demanding more pest inspections minutes after I start to enforce rent payment.

In the event one or two houses does become vacant and you have used leverage/debt, hopefully you've received good interest rates making your payments affordable.