I have my own website, but I link over to that one once a guest clicks on Rates & Reservations.

Do not over improve but don't go too cheap when the area calls for higher finishes. 

I think most investors are feeling the crunch of low inventory, higher prices, and high interest rates.

Obviously you want to pay attention to your interest rates, cost of appraisals, and fees for refinancing.

Price wise, houses in the area mostly follow (roughly) national inflation rates.

They will hit you on the interest rate and LTV.

So your success rate is 0.1%. 

It will almost definitely be more expensive and take longer than you anticipate, and those HMLs aren't cheap. 

After the low rates started to increase when the FEDs pushed to raise them the inventory went up significantly (in January 2022 there were active listings on the MLS of 40-45 listings, now if you look 160-170 listings).

As for house-hacking an existing quad, only putting 5% down in this high interest rate environment will almost certainly mean you won't be "living for free" as is the point of house hacking.