That is pretty much the point of my post; since I only have experience with full-service PM, data from other investors’ experiences with other alternatives would be extremely helpful in doing such an analysis. 

Would anyone happen to have experience with alternative financing options like HEI (home equity investment) companies that would allow us to continue living in our home?

What alternatives can I propose that might work?

Alternatively, if these quotes seem reasonable, let us know.Thanks in advance for any leads or advice!

My last purchase is up over $1m above my costs in 3.5 years. 3) alternate rent models (rent by room, STR, MTR).

If I have the choice of paying $50k to the IRS or paying $10k more for the replacement deal, the choice is pretty easy. 

I searched for alternatives to CC but it mostly points to RentRedi, AppFolio, etc, other cloud based options that he doesn't need.

With stricter lending guidelines, more investors are turning to alternative funding sources.Do you think this shift is temporary or a long-term trend?

Can anyone recommend a good alternative?

At some point people realize they can't borrow their way out of debt, they need alternatives, this is an alternative that doesn't need banks and large bank fees.