Some examples of these techniques include sending out targeted mailers or running internet advertisements.

I'd delegate cold calling tasks for VAs and concentrate solely on engaging with warm leads.

You will need resources in place to service the property, especially for tasks that need immediate attention. 

It will be self managed, I will be near the unit (less than 5 mins away) to clean and take care of any issues.My numbers:Approx Value of Home $240-280kCurrent monthly cost / $860 mo (mortg,ins,tax)Utilities / $250. mo (elec,gas,water,trash,internet)Cost to run as AirbnbApprox monthly cost with STR insurance ($250/mo?)

If you just send the standard "will buy your house for cash" postcards, or do generic bandit signs, or canned PPC internet leads, you will waste all of your time on crap "leads" that aren't real.

How many owners making $150k+ at their day jobs (which is about $75/hour) are doing PM tasks they could outsource for under $50/hour?

The internet is information overload.  

Contracts found on the internet from strangers are often dated, not in compliance with your local laws, or plain trash.

Break down the rehab into smaller tasks (e.g., plumbing, electrical, roofing) and try and estimate the costs for each. 

You likely won't find your answer on the internet, FB marketplace is a good start, but I found all my help up there through referrals and picking up the phone.