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

@Andreas Mathews admirable, but make sure you do some research so you understand what a PM can make.Starting your own PMC business will require 75-150 doors to make a decent living, depending on gross rents and your fee structre.Working for a SFR PMC as a PM, will require a RE license and you usually get paid a percentage of the gross rents the portfolio of owners/properties you manage generates.

Would a property with 4 bed or 5 bedroom would have a better cash flow ? 

What other methods should I use to acquire another property? 

We manage a property that was having drain field issues for awhile, got estimates and had the owner approve one of the vendors.

I have recently just purchased my 4th investment property all in my name and have accumulated a DTI of 45.9%.

So, your property must be secured with deterrents to hopefully stop this from happening - but, it's impossible to guarantee security.

I've invested in 6 properties and counting with them.

I imagine people who've had 2nd or 3rd houses in hollywood hills are not interested in rebuilding or doing the work.  How do I go about finding those who'd rather just collect the insurance money then sell it off at a...

I’ve had a great experience with Brian Hartsell at key properties for my vegas properties.