I talked to a modular home company in my area, and he said to build a 4 / 2.5 2200 square foot home would be 215k, and then foundation and utilities would be another 160k.

Kudos to you for utilizing and actually finding deals on FB.

This property is gonna cash flow over $1000 a month after we're all said and done with utilities mortgage and more.

Replacement homes will be climate hardened, smaller, functional and include consideration for the type of infrastructure, architecture and sustainable/durable materials utilized. 

Is there a possibility of getting utilities to the place?

As noted above, up to 50% of gross rental income normally gets eaten up by expenses (taxes, management fees, utilities, landscaping, repairs, capex, etc).

Did you have taxable income that could’ve been reduced utilizing tax strategies?

Specifically, I’d love to hear about best practices for managing shared spaces, screening tenants, and setting up house rules.Additionally, I plan to split the utilities among the tenants—any advice on how to handle this efficiently would be greatly appreciated!

HOW TO SHARE UTILITIES 101You have a property with two or more units and the utility meters are shared.

Now purchasing a home with cash is always good b/c obviously cash is king but also I think the part you might've missed is that, the money your utilizing on these home's won't actually be yours, but the banks or whatever institution you used to fix the home or make its value worth more.