Not bad for an extra $1,000,000 in coverage.Discuss with your Insurance agent and Attorney the recommendations on if the $500,000 limit is enough.  

I always recommend that anyone getting started attend in person meet ups.

I would say that I recommend getting an umbrella policy just to cover yourself for liability purposes/reasons. 

Is there a particular one you recommend?

However, if you're really looking to grow that money, this isn't something I would recommend as it's not expected that these lots have a ton of upside in the near future.

All you get is what you can export/import via CSV file:(We use Propertyware, have experience with Buildium and have played with Appfolio and RentManager.Buildium is for smaller companies.The other three are tied, the differences being how much automation & customization you want to do.If you don't see yourself growing beyond 150 units, go with Buildium.If you're not very techy and plan to grow over 150 units, we'd recommend Appfolio.If you're techy and plan to grow over 150 units, we'd recommend Propertyware or RentManager.Of course, schedule some demos, take GREAT notes and them make your decision.FYI - there are MANY new options on the market, RentRedi, TenantCloud, Apartments.com, Hemlane, Rentec.

Scott's book, hard money isn't always recommended and it's better to go with a portfolio investor such as smaller banks, or partnering with other investors, or of course seller financing. 

(SpaceX)- Book Recommendation: The Millionaire Real Estate Investor.

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

The attorney may spot issues and recommend an objection letter.