Get a job with a developer or commercial real estate broker team that specializes in development land.  

40 y/o, married with three kids, software developer by day. 

Separate accounts for every property can get messy fast, so many investors group by LLC or entity and then use software to track property level numbers.

Many of these costs don't apply to SFH' and suspect that along with the well-defined buyer pool is why SFH development is still desired by many.

It truly is an outdoor paradise with hiking, fishing, hunting, climbing, and skiing potential all in one place.Here is what makes it interesting from an investing and development perspective.Affordability: Compared to other mountain towns, land and property are still extremely cheap.

Quote from @Junior Maravel: I would use a PM software, and have a vendor list on standby for anything that might go bad with emergency calls or issues that come up with repairs/maintenance.

moment or the most important step your team took during that implementation or development phase to ensure it was set up for success?

I googled, read one afternoon and invented my own chart of accounts that I have used for years, with subtle changes as needed.That's excellent that you have the knowledge and experience to create the software!

Quote from @Bob Ross: Do you building a duplex (2 condos) is a good first development project?

I use QBO exclusively for my real estate clients and my own portfolio because its integrations and features make it more efficient than other software.