RR insists that my SFH have a unit # in addition to the address which is confusing for all. 

If they insist, you should check your paperwork. 

There may be less profit there than he thinks.If he insists, can he force a sale?

Your partner may also insist you pay the legal and accounting costs associated with your exist.  

If you insist on using the llc you’ll likely need a commercial DSCR loan or a Portfolio loan (a loan kept by the institution, from a local credit union or small bank. 

I've been communicating with the folks at Goebel but they seem a bit nervous about working with me and honestly, I'm not comfortable talking about my rehab plans, time frame, and construction budget which they seem to be insistent on knowing.Thanks for your help.

Two were originally Section 8, now only one is (tennant insisted on endless unaffordable improvements, so I had to lose the status).  

Prices are still high is many markets, but interest rates have gone up 2.5x from their lows.If you insist on buying a deal in this market your best bet is to:-Buy way under market value (need to find a deal, something distressed, something that needs work).

You can insist it is one payment but if you allow them to pay separately you send them all a late notice when the rent is late.

If you insist on forming a 50-50 LLC, I will ask if you are ready to spend anywhere from $2500 to $5000 on the formation and an operating agreement.