Are you using these numbers to get to your Net Operating Income?

I've worked in PM companies ranging from mom and pop all the way up to operations which manage thousands of units in very wealthy neighborhoods.

Better to off load the property than waste spending good money after bad.

You have to have separate trust accounts for security deposits, a trust account to get the rents into and then a regular operating account. 

I also operate in the Greater Toronto Area.Do you know how many units you would consider in a MF property?

A line of credit lets you draw on funds, as needed, for routine operating expenses up to the maximum amount of the credit line.

I own and operate a remodeling company with my business partner.

If there are signs it's operating as a personal account (ie. cash withdrawals and , or appears to be (eg. expenses paid personally) your LLC, if challenged in a suit, could be broken and charges put against you as sole proprietors.

Or if it's over a crawl loads of vapor can rise out of the dirt into the residence.

Getting the septic pumped is definitely on you and should be built into your operating costs as a recurring maintenance item.