Additionally in 2021, The mobile home parks have allowed me to introduce my 20 year old twins too the real estate business by enabling them to acquire, renovate and rent Mobile Homes.

If however that's not the case, obviously getting a mortgage and using your cash as down-payment is the preferred option.For example - I started with $70k, BRRRRed a rental and pulled all my equity out, which I put into another rental and I'm going to extract the equity pit of it as well.

During that year oregon passed a bill that enabled state wide rent control.

And that's not to say that I don't believe you, but it is to say that the scenario you're citing is A) particularly to residential real estate, and B) mostly enabled by the expansionary monetary regime we've been under for a half century. 

This plan has been influenced and enabled more by everything I’ve done before or after college than by my college experience.If you have a particular goal with college that supports your long term strategy then go for it, but don’t let it wreck your credit or bury you in debt.

The latter would enable you to then upgrade those units.

Right after I told my family about the deal, my dad reached out to me by surprise and told me he'd be willing to lend me the money to enable me to use a conventional loan.

Both the cities have great tax rates (around 1% of purchase price, with owner occupied exemptions to add) and also enables you to Airbnb your unit should you choose. 

Would have been enabling them. 

enabled trail cams that probably alert you in real time (which would act just like the other traditional security systems).