This 50k doesn’t include the interest on the principle over the 9 year period.

Last year my accountant said he would only have to pay the capital gains on the portion of principle he received each year.

However, multifamily properties may offer more considerable long-term rewards if you're ready to take on the challenges of maintaining numerous units and are interested in gradually creating a larger revenue stream.The optimal decision ultimately comes down to your own investment objectives, risk tolerance, managerial skills, and the particular market dynamics of the regions you're thinking about.

For example, interest only vs. interest and principle vs. interest, principle as well as a certain minimum % of the loan are all types of payments I've see on lines/loans of credit.

This is easy in principle, but difficult to pull off.

@Patrick Chafe You need to sit back and objectively think why does it make sense to hold property.

FSBO, expired leads, local homeowners)- Nurture your network consistently via phone, email, text, in-person events- Set as many appointments as you can to get in front of people and explain your value proposition... then go back to nurturing the contact until they have a question or need something from you- While doing all of the above, try to avoid/ignore the 'shiny objects' that are sold to agents on a daily basis. 

The same principle.

In light of your circumstances, take into account the following real estate investing strategies:Fix and Flip, Buy and Hold, and BRRRR (Buy, Rehab, Rent, Refinance, Repeat)Always keep in mind that careful preparation, thorough research, and modifying your approach to suit your risk tolerance and financial objectives are the keys to successful real estate investment.

Don't get enamored and distracted with the shiny object...the deal has to make sense and be underwritten properly.