I am wondering what is the best way to handle the situation? 

Duane  very few houses these days have open houses the seller can instruct the agent NO OPEN houses. so thats how they handle that.and of course you want to pick a realtor who is investor centric like I do. 

If you don't mind handling calls for property questions after hours, or going after rent, or time in small claims court, that you really don't need one. 

The agreement we have is thatI’ll putt all the money (property acquisition, rehab cost, etc), he will handle all construction/project Managment and selling.

Start engine also handles all money and has fees you can read about in various 10 k filings with SEC, others website in specialty Markets but get familiar with nuances of Crowdfunding law before signing anything. success comes slowly it's a multi-year raise for most. unless you have private investors lined up.  

I would have a PM handle the tenant screening and take a shot at doing the rest of the management myself.)Thoughts or experiences?

I would figure folks in that space have business managers that handle a lot of the money.

So, you pay a pm to handle your rentals. 

How would you handle tenants panel box access with the following scenario:  I have an up/down duplex with an apartment on the 1st floor and one on the 2nd floor. 

Hire specialty admins to handle management and liquidation over a number of years.Distribute proceeds over next decade for cash flow and to limit tax liability.