It doesn't have to be 100% but even 20,30,50% can give you excess cash to continue investing. 

She can’t make excessive noise or be aggressive.

I’ve got two women in one unit I suspect are washing clothes and hang drying them as the washer is currently getting the majority of the money.

If using accurate underwriting (something close to 50% expense estimate) your costs will be far in excess of your $3k current lodging expense.  

I hav some excess cash that I would like to put in a rental property.

A tenant who wants to stay and is on a fixed income is likely to stay a long time which means you won't have excess loss to vacancy/turnover.

These markets need investors, without them, the cities and towns will be left out to dry and the local tweaker is looking for easy break ins for their copper wire.

In my area the water company will forgive excess usage if it can verify there was a temporary water leak causing it. 

We're funding in excess of $35mm a month in short-term, construction loans, so we're doing something right.As for the idea that some construction manager builds your rehab schedule is false.

Once you’ve paid in a considerable amount of your wealth year after year as you’re building you’re business (I built an insurance brokerage from the ground up but new to real estate investing), you become frustrated at the lack of competence and accountability you find even in qualified CPA’s as well as the excessive amount you seem to pay Uncle Sam.