If you have some heavier permitting restrictions I would think 4+ months would be a good benchmark.  

Regarding the 1% 2%,  3% ...rule- It's great to understand these rules but you should eventually establish your own finance ROI benchmarks & hurdle rates.  

If you bought it 8 months ago and she was there, you can only really use that benchmark.

I would also recommend my friend, Brent Merritt at Benchmark Mortgage in Mt.

What I discovered is something I have never seen anyone speak about on Bigger Pockets (I am sure someone has discussed this I just have not seen this idea discussed at all...or anywhere in my short research period on cash flow and real estate properties.We hear everyone speak about Cash Flow, NOI, Cap Rate or Cash on Cash returns.. however I think there is another important benchmark for investors to consider when deciding their down payment percentage and financing levels because of their effects on cash flow...Capital Cost per $1 of Cash FlowOne of the most illuminating aspects of real estate investing is financing isn’t bad...Having spent all of my life not accumulating debt this has been a difficult psychological barrier to break through.

Then hit the education HARD on that type of investment strategy and create goals that have benchmarks to meet as you chug along to accomplish them.  

Manufactures have the option of switching to better insulation (high-density closed cell foam, vacuum insulated panels, etc) and could exceed the new benchmarks without making the tanks physically larger.

You could use how desirable you would find a unit as a benchmark for how tenants would view the property.

It requires you to model through the exit of each asset, which is a best practice, in my opinion, to be able to properly benchmark investment opportunities and allocate personal capital.  

Do we have (state by state) benchmark utility cost data I can use to compare my bills to?