We gave two weeks concessions to the contractor due to weather and a few unforeseen additional tasks that held him up.The contractor is fighting our stance and unwilling to meet in the middle and accept any responsibility for the delay.

I don't want to lose this money if the offer is accepted and then a house inspection goes through and there are unforeseen major repairs needed on the house... is that what the property inspection contingency is for?

It doesn't matter if we get 1 call per month from your property, or 100 calls - our investors know what their PM expense will be before the year starts, barring an unforeseen vacancy. 

You intended to occupy the house when you got the mortgage, you did occupy the house, and then unforeseen circumstances resulted in you moving.

4- If renovation cost / cap-ex turns out to be higher for some unforeseen reason, can the GP require investors to kick in additional capital?

I think I'd do the later to insure there wasn't any major unforeseen costs.

I don't think a network can be to big, my biggest issue right now is coming up with the extra cash to fund down payments and have the extra cash to cover unforeseen expenses so I am venturing into wholesaling with a few seasoned people in the local group I started going to.

Second question, I'm working with a small local bank that told me since I don't own a primary residence (sold it last month due to unforeseen personal circumstances (ie divorce)) that they have no problem underwriting the loan as a primary residence that I can just "change my mind later" and not move in.  

My family and I own a 3 story multi-family building with an elevator in Washington State...We regret the day we decided to have an elevator... and would never do it again...At first... being able to offer our tenants the convenience of an elevator seemed like a good idea...However... our elevator turned out to be a very costly investment... dripping with unforeseen expenses, liability, maintenance, and government inspections... with little... if any...

Even if you do owner financing you will have to bring money to the table 90% of the time for closing costs or for unforeseen repairs or even before closing for appraisals.I had about 10K when I ought my duplex so I understand about not having 20% down.