Nice job!

Client rents that house and makes 1k monthly profit, plus has a really good paying job.

I would use the income to slowly improve the house and once you get it to a good spot, HELOC out some money for a down payment on another place rinse and repeat. 

HUDuser.org is great for vacancy rates, but cross-referencing with local market reports is important for more context.For job diversity and employers, LinkedIn or regional economic development websites often provide insights.

Over this time I have acquired my contractor team and have vetted them through my job as a property manager, figured out my strategy(Off Market/Deep buying) and location.

I agree that DealCheck (or the BP calculator) does not provide enough tools or functionality to analyze those types of transactions (yet).But I would argue that it does a great job at analyzing more traditional buy & hold SFRs and multi-families, as well as flips and rehab projects. 

They have allowed me to quit my job as an Engineer. 

It's so bad that my last purchase was in Indiana, which was my first OOS investment, and likely will continue to look there if the market doesn't improve here.  

I usually start by analyzing data like population growth, job opportunities, and rental demand.

Just to beat a dead horse, we could see a recession in the future where you and/or your spouse lose your jobs.