I have the opportunity for a cash offer where the property has great up side once it is renovated.We can get in to the property no problem since we have the cash, the issue is how to finance the repairs and renovations since we just got started on the business and no longer have a w2 or 2 years income under the LLC? 

Currently I run QuickBooks, but their claim is there’s no need for QB as their accounting and reporting is a QB replacement.Should I be running QuickBooks along side Buildium or ditch QuickBooks and solely use Buildium?

., I definitely agree with the accounting piece, what are you thought on the legalities side of this.

When we first started we began there as well because we liked the idea that one side  could pay for the mortgage if there was a vacancy.  

You might convince someone to give you a private money loan from the business side of it.

The other side will try to mediate a bit, and ultimately, if they don't cooperate you will get the eviction order.

Perfect, sounds like the commercial side will be all set. 

4) Is my insurance broker on my side or the insurance side?

The goal would be to find a duplex in your area, live in one side and rent out the other.

Side deals are a direct violation of both the landlords and the tenant's contract with HUD.https://www.biggerpockets.com/blogs/9232/55313-intro-to-section-8---your-perceptions-vs-my-realities