You are off to a great start by educating yourself and exploring the various ways to invest.

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

I like the idea of estoppels, but they're a PITA to get signed by tenants especially in class C and D assets.

You will probably have some sort of limit regarding mold/medical, but thee things can turn into a mess, trust me, I manage a lot of units and have done so for almost 30 years. 

For that I would maybe look at CoC (Cash-On-Cash) return by comparing it to the amount you invested. 

This particular JV was structured to encourage a quick turnaround by increasing the rate of return if not completed and on the market by month 4.

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

As summer winds down, here’s a look at how things shaped up this season.Most property managers reported occupancy rates being down by 10-12% year-to-date.

Here's a case study on a 6-unit apartment building that shows just how much you can save by breaking down your property into its components for faster depreciation.

Purchase price: $145,000 Cash invested: $8,000 This 2 bedroom Condo with a garage was fully renovated by the owners before moving into a house and holding it for a rental since 2001.