Hello,A good rule of thumb in NC I tell my sellers about: if we get lots of showings in the first 2-4 weeks, but no offers, the price is too high by a good bit (15-25% estimated).If we get showings, and one low ball offer, the price is a little too high (5-10% too high).The longer a property sits on the market, the more likely you'll end up accepting a lower price ...better to go ahead and do a price reduction now and sell it faster, than letting it sit and eventually the market will do the price cut for you. 

One bit of advice is scaling too fast if the market changes and factors out of your control (interest rates, job cuts, rent decline, job loss) have enough in reserves to weather those storms.

You've cut an entire month of rent out of your year.

There are few cases where you can do 90 days with no rehab however there will be a final consideration of value from underwriting, which may or may not cut the value. 

if your ARV is 200K, for example, and it needs a medium or greater rehab, you probably need to buy under 100K.  150K won't cut it, you'll lose money.

It’s all about having a clear, focused strategy and sticking to it. agree paying down principal day one really saves you interest and the amount you would pay it down say a few hundred a month .. that money does nothing for increasing your holdings one just spends that on dining and a new pair of shoes etc.. then if you need to cut back on payment you can however you would be shocked to how much faster you create real equtiy.

If you’re even considering this look around for something with a $10-$20k deductible and see if you can cut it in half.

However, once I assign a deal or two to an investor with no issue, I will usually cut out my attorney and just deal directly with the investor and title co on subsequent deals.

Name the company who cut you a check in your name?

I think Zillow just wants to make money, take a cut where they can to pay themselves for running the most popular real estate site in the country.