My business model targets tenants who are not "time-sucks"even if I have a property manager, because I value everyone's time and their time as money.  

If you add just a little of this and a whole lot of nothing too costly, I'd say your investments should bring you quality tenants, who will take care of the property (hopefully) which will bring you more rents, which is likely to be on time, probably less repairs overtime assuming you've fixed things properly during the re model and so forth.

People pay for convenience, and expertise. 

I actually built a fairly comprehensive  VR model and almost every property I put in doesn't cash flow, so don't be discouraged and just keep looking for that 'right' opportunity.  

Ive spoken with realestate proffesionals that pay for specific advanced courses to further there expertise in a specific subject.

Once they have your financials on file and feel comfortable with your model, financing is much simpler to get and they often can have ideas for financing you might not have thought of.

You've got a great model going with the private lending. 

If you have the business and finance knowledge and expertise, what are key roles that will complement you?

great start, keep doing your research.Hard Money- this is a business model and is a legit operation. 

Mine is $15k which is eerily close to J Scotts but considering we are in similar areas and my business model is pretty much completely based on his books it is no surprise our baselines are similar.