I own a wellness facility, but also invest in real estate, and help investors.

You may get away with using that kind of policy for a full-time investment STR. 

My goals are to start building an investment portfolio of professionally managed (I could tell you all the reasons I will not do it myself) multi-family properties and, in time, develop a property in the Northwoods (Wisconsin/UP).

Is it possible to do DSCR with mobile homes? Are mobile homes Section 8 approval?

I currently own (and property manages) one investment property (2 family rental).

Start by reading the Ultimate Real Estate Investing Guide: https://www.biggerpockets.com/guides/ultimate-real-estate-investing-guide/introduction2.

Very exciting you are looking to get into the RE investing world.Thanks for the interest in Rent To Retirement.

Freddie has a reno loan product that can be used for investment properties; this is only for first position, though.For the Heloc - it goes back to whether your mom wants to continue carrying the loan for income, and if so, how will you pay off the heloc once the rehab is complete?

All together around 80k worth of money invested.

Investment Info:Office Space commercial investment.Purchase price: $1,100,000Cash invested: $25,00014,000 SF Downtown multi-tenant office building