My closing took just over 50 days total because of the paperwork. 

I want to use the Rehab Estimator calculator to start running the numbers to find good deals but I'm stuck on how to estimate the cost of repairs without totally guessing...

With my partner, we have about 16k in cash total which doesn't leave me in a comfortable spot.

If you have 50k in consumer debt, a bank is usually going to look at the total amount and use ~3-4% of the total as measurable debt service. 

Total no of people in house are 5.

I plan to 1031X two of my current properties (225K total) to make the purchase.

Perhaps this is dead simple observation, but it seems like that equity I took out (which I'm still paying interest on) should be factored into the new property P&L since taking out equity is never seemingly total free and clear.  

But for the purpose of my own research, I google online, a website called forsalebyowner.ca pops up.

Does the NOI of $143,666 with Operating Expense: $226,573 mean that the total income it had was 226,573+143,666?

It said they expect demand for apartment rentals to ease as all the new builds come online.