(we wont) what protection do we get if he doesn't give us the house after we've paid?

Keep them well paid and do maybe every 3rd, or 4th, job with the same contractor.

I'd recommend having 1 QB account that both you and your partner can access for reports and income/expense tracking.Regarding the platform, I've used QB for over 4 years and its been a game changer for me.

I have tenant in one of the rooms who has not paid and has ghosted me. 

Monthly owner statements as well as keeping track of expenses is part of the PMS.

If it's an issue of paperwork, fix it and you'll be paid.

Understanding the potential rental income is crucial in assessing the profitability of the investment.Expenses: Do you have a clear understanding of all the expenses associated with owning the duplex?

Hi Brian, I moved to Columbus a few years ago (from Portland, Oregon which was super expensive) to become a full time real estate investor, and ever since, I've completed quite a lot of BRRRRs, flips, and own a successful rental portfolio here in Columbus Ohio.

Both my business partner and I (in real estate investments) paid for a program to learn multifamily, learned a ton, and met each other. 

Seems expensive.