If you want to pay it off earlier you only have to have the diligence for a short period while you set up auto pay with the additional principal and you have the option of backing off if you need to.  

BUT we found that tracking all those accounts is crazy hard so we invested in software for a unified inbox, multi channel sync, owner and cleaner logins with specified access, multi calendar, an app for easy messaging, plus my favorite auto messaging. 

We have each shared examples and I have another one to share.I was purchasing a property formerly used as an auto dealership.  

Their bread and butter is home/auto/small rentals

That means that if you divide your expense payments (mortgage principal, interest, taxes, insurance, HOA payment, auto loan, student loan payments, credit card payments, etc) by your gross monthly income, it needs to be at 43% or less (or at least in the 40%s).

By signing up for this with your auto insurance company, you may be entitled to a 5% discount on your auto insurance.

Myfico.com lets you order reports from all 3 bureaus and provides correct FICO scores versions used for mortgage lending, auto lending and credit card approval for a one time charge of $59.85 or a monthly subscription of $29.95 which will give you updated credit reports every quarter but does allow you to cancel at any time.Steer clear of offers from consumer third party sites that offer you your "Credit Scores," which are not Fico scores, or a free or an extremely low fee for Fico scores as they are not used by 90% of lenders for decision making. 

Also don't forget auto expenses for getting to and from your properties.

I retired early from the auto industry and looking at real estate as my second career.

A decline That began long before this recent recession as the auto industry left the city.