It tells you the livability score for each zip code / neighborhood. https://www.areavibes.com/

I recommend finding an accountant who specializes in real estate taxation and tax planning.You may want to consider working with your accountant remotely to expand your options.I would also recommend looking for a accountant willing to work with you throughout the year.

You can also tap into local real estate meetups or REI clubs to find contractors specializing in cosmetic rehabs, such as kitchen and bathroom updates.

For flip projects like you mentioned, it's best to talk to brokers/lenders specialized in hard money financing.

We are over 20 experienced CPAs active in these forums, many of whom specialize in assisting real estate investors like yourself.

There, you'll find detailed information on investing—both in general and specifically in Las Vegas.Before I continue, note that the charts only include properties that match the following profile, unless otherwise noted.Type: Single-familyConfiguration: 1,000 SF to 3,000 SF, 2+ bedrooms, 2+ baths, 2+ garage, minimum lot size is 3,000 SF.Price range: $320,000 to $475,000Location: All zip codes marked in green below have one or more of our client’s investment properties.What we are seeing:The chart below is from the MLS and includes ALL property types and price ranges.Rental Market TrendsThe charts below are only relevant to the property profile that we target.Rentals - Median $/SF by MonthRents had another slight drop MoM ($1.18/SF vs $1.19/SF).

Are there certain zip codes to avoid at all costs? 

This is a more specialized field.

As far as the tenant owning their own mobile home, look at Alabama Code Sections 35-12A-1 through 35-12A-15, which provides the remedies for selling mobile homes that are abandoned.

This is how most of us buy real estate--nothing special.