It only complicates your business and makes it more difficult to operate.If you actually have a good accountant I would be very surprised if they recommend you form a corp.

The Short answer is this: While you are correct that you would be paying down the balance of the mortgage you would not however be in a position to pay for any surprise that might come up and need you attention and you money...

Congrats, I am surprised to see the number of improvements for $5,100.

However, don't be surprised if your agent tries to send you things to consider from time to time; it is always worth considering, and sometimes can expand your horizon. 

But don't be surprised if some people you've never worked with require some sort of deposit from you. 

You will be surprised how easy leases can be broken.

To my surprise, they both impressed me. 

On flip properties the key is to get the purchase price correct and to eliminate your surprises. 

Install was a bear--it's surprisingly hard.

I reckon if you plug in some more conservative figures, you may end up being pleasantly surprised if the expenses end up being less, and less likely to have a poorer result than allowed for!