I think you answered your own question on the first front, not to go with a traditional PM.

Should I find a commercial or traditional lender now?

After doing your rehab, you would then want to put a renter(s) in the property, and refinance using a traditional mortgage for the lower interest rate and longer term.  

Trying to figure out where I will be able to hang a license without the expectation of bringing in sales in a traditional sense.

On our end, the "is it going to screw with me getting a traditional mortgage?"

Slice charges a rate per day booked as well as Proper Insurance which has a more traditional structure.

We're also doing investing in both Traditional & Roth SDIRAs, which we will use to self-fund Long Term Care vs buying specific insurance. 

@Shera Gregory, what I mean is that you could structure a deal where they get paid a "fee" once you sell and the fee structure would be determined by the amount of time.Not sure if this would be considered a traditional loan.

Traditional real estate search sites have very few results.

I've heard about getting these done and haven't seen a traditional lender advertise that as a service.