@David Olson, thanks for the compliment! I'm new to REI in that I only that a couple of fourplexes and that flood house (which was my first flip, but I had intended to rent originally), but it took about a year and half to do all that. In the meantime, I've done a lot of walking through houses and submitting offers, so learning just builds over time.
I was planning on one more house that was going to be a rehab to rent, but the deal fell through because the owner wasn't making any movement to actually leaving the house. Bizarre situation.
Like I mentioned, the market in Houston seems to forgive floods if it was only Harvey. If you have multiple floods, the buyers are much more cautious. Personally, I stay away from multiple flooded houses.
If the numbers work, and you've done the due diligence, put in your offer, do the inspection, get the contractor quote, and see if it all lines out. Since you'll have an option period, you can back out if it starts looking ugly. You'll lose money on the inspection price and the option fee, but it's just the price of doing business and learning.
Happy to talk more as you keep going.