If you want to stay in your house, then your only option would be to leverage equity which will probably be in the 8-10% interest rate range.Not knowing the entire situation, I think you could consider downsizing and then using the proceeds to buy a 2-4 unit property and start making $40-75K right away with still no debt. 

Without too much detail I had to quit my W2 job 2 years ago to care for my disabled son and my wife is still working.

Quote from @Neal Schadler: I have several properties in Cleveland and the surrounding areas.

You are 18, you shouldn't be ready to buy a property yet.

I would be willing to take an offer on the property in its current state so you could configure the construction any way you wish.

Every inch of this property has been meticulously updated by professional investors featured on TV, ensuring top-notch quality and style.

Long story short, I have no primary home and the property the guesthouse is being built on is a LLC with 3 years remaining of 20k PPP.

My property tax is around $350 a year. 

Are these areas good for rental property investments, or am I barking up the wrong tree? 

I've had great success househacking in the past, including my current home where I rent out a garage apartment, but I'm having trouble finding a property in Vegas where it makes sense.