Go ahead and file.In real life it costs you time to figure it out and money.

You aren't necessarily building that much equity (cost of building exceeds the value) but it is a third option that is a hybrid.Another factor is location.

Several people told me I shouldn’t do this, but it’s one effective way that helped me scale up to 29 SFR in 9 years.

Cost was not as much a determining factor.  

It is not low cost.. you need 7-8 rooms per house to make it decently profitable. 

For example, they won't need to cover your personal belongings (furniture, clothing, etc.) because you won't be living there.A landlord policy should cost about the same as a homeowner's policy; it just changes what is covered.

Multiple people including myself have tried to caution him of the the true costs but he's been repeatedly dismissive and has made it clear we give him motivation and he wants to prove us all wrong (whatever that means). 

Strong dollar means higher component costs.3.  

I’m about to be 29 and I’m hoping this really takes effect in my life in my 40’s.

Utilities cost $150 per month.