I have been using Quickbooks online for years and love that it's the industry standard and robust software.

You should have a robust insurance policy.

I worked with a company providing turn-key rentals.

Here are my answers: - It is unlikely the $600K property will provide cashflow. 

My belief is that arcade, pool tables, etc. would provide a different experience and might be more likely to rope in the whole family.I initially wanted to bring over my modded PS2 with a bunch of games, but I've heard horror stories about doing that. 

I mean can you consistently provide an industry standard finished product similat to what the licensed trades would provice)

You can always request income verification, pay stubs and bank statements, if they're willing to provide it.

Ensuring transparency and efficiency in managing owner resources is critical1.Clear Communication on Costs: Provide owners with detailed breakdowns of repair costs and explanations for necessary expenses.

Remember, many sellers are looking for solutions to problems, so your role is about providing a service as much as closing a sale.As you navigate the wholesaling process, keep in mind the importance of due diligence.

Follow the advice you have been provided by great people and real estate legends below, especially from the likes of @Jonathan Green and @Nathan Gesner and you will buy your first rental property within the next 3 months.Goodluck.