Should they be a benchmark for how the other rents should be determined?

We simply live in a world where 2 percent inflation is the new benchmark.

Is there a benchmark is far as profit to do a 1031 exchange?

I hear people say all the time that a good benchmark for these deals should be $200+ cashflow per month.

Guideline B-20 now requires the minimum qualifying rate for uninsured mortgages to be the greater of the five-year benchmark rate published by the Bank of Canada or the contractual mortgage rate +2%.OSFI is requiring lenders to enhance their loan-to-value (LTV) measurement and limits so they will be dynamic and responsive to risk.

I tend to try to aim for 10%+ cash on cash for a go/no go decision. 1) Is this a good benchmark?

There are other markets that have the same type of benchmarks.  

I'd recommend running it through your rental property calculator and bench-marking it relative to your investment alternatives (and goals).  

I intend to make the 4 year mark a benchmark goal.

Some loose benchmark goals that I've been come up with and that seem reasonably attainable are: by 5 years from now owning between 5-15 income generating rental units, and by year 10 owning between 20-40 units, hopefully generating at least 250-300k between my salary and our rental properties.