It can have many different components (channels), but needs to be persistent, consistent and reliable. 

We own the most recent and comparable comp on the market and got it for $25k less than what each of the properties is listed for.

Since, I am not in a hurry would it be easier to network with sellers and aligning the deals prior to selling my property?

I guess doesn't the whole rent the house for 15 or 20 years and have someone pay your mortgage component not apply while it cash flows?

To be kind to 3rd party PM companies, they can't really afford to be aligned with your urgency. 

In which case, I'd have a 3/2 with nonconforming space...and I already have a comp on my block to tell me what that value probably will be. 

I would probably look at the components of the house that are frequent headaches/money pits, and determine their condition.Roof, windows, HVAC, Main sewer line, appliances, etc.If you pretty much gut the place and make everything new, I would say save less. 5% on the high side and then at the end of the year, reassess.If the components are older and towards the end of their life and you don't plan to fix them upfront, probably go as high as you can afford and makes sense...10% or more? 

I believe investment profits break down into exactly 6 components, so I wanted to put it out on the forums and see what people think and if it could be helpful. 

For months now, he’s promised completion of certain components and not delivered.

@Michael Plante home possible and home ready both do 3% down, but its a thin needle to thread through because they have income caps to qualify for it, which typically do not align with income minimums needed to meet DTI requirements. plus the rates and MI are so high right now on those, its kind of a moot loan product in today's market. not impossible, but very difficult.