Understand that high returns mean high risk in any PASSIVE investment.  4.

I would argue that after 5 months your price is too high for the market. 

HVAC: Is the ROI high enough to justify installing high-efficiency furnaces/boilers over standard units in a mid-range flip?

For those actively acquiring properties, this could significantly impact deal analysis, particularly for high-income W-2 earners trying to offset ordinary income.The estate exemption bump to $15M / $30M is massive!

With just a 4% vacancy rate, this is one of the tightest rental markets in the county.28210 – SouthPark | 8% VacancySouthPark offers luxury living, high-end shopping, and incredible dining options.

I would do the one high end property that could demand top dollar.

I builded my vacant homes high equity list and tired landlord list through Propstream, and I also sended through Propstream, what's your experience?

Some notes are very high risk so I suggest you get as much training as possible. 

It's called buy low n sell high, not buy high and pray for inhuman additional astronomical highs. 

Regardless of your level of plain/simple vs rustic vs fancy, you can do it for much less by just going to used furnishing stores (primarily).I used both 1) high-end second hand stores (meaning not primarily Goodwill and Salvation Army), and 2) lower level antiques stores where they have decent pieces for say < $500.