Typically I've seen about $500-$800 annually in repairs per house per year so that can be viewed as a benchmark.

But if you're only benchmark for a decent investment is that it's better than other options, then i'd recommend rethinking your strategy. =) Happy hunting!

Better yet, make a few appointments and tour similar properties, so you know where the benchmark is for you.

Once I obtain that bench mark of (multiple properties) then even more strict overwatch of the finances is a must as I will follow my lawyer's advice on structuring each property.  

Always, always use contractors that have draws at set benchmarks: rough-in plumbing passed, drywall complete, all doors installed, etc.

I locked in 2.875% then they took forever to close and were busy so I thought I'd try to get competing offers especially after hearing the benchmark rate fell to zero.

If a property hits certain benchmarks they post them with the specs on what kind of returns you can expect. 

Differentiate your rental like @John Underwood mentioned- amenities, prime location, benchmark on your competitors.

Yes, I invest in high yield dividend stocks, that have good revenue and dividend growth (other benchmarks as well I check before buying) for cash flow, as well as a LTR and a STR, and a couple of notes for a good mix. 

Check their rates, lease fees, lease renewal fees etc.Do direct deposit of your rent collection and contributions to your PM for repairs from that bank account you just opened and never touch the income as you save for the next property.Do a spread sheet on all your properties as you accumulate more to keep up with passwords for log in to lenders, PMs, insurance, etc. keep track of cash flow, property taxes and insurance (the fluctuations of these benchmarks will give you the information you need to make decisions on raising the rent or not.