Each of you would have to qualify individually for each mortgage in just your name.Individual banks have their own rules regarding how much liability they are willing to place with each client, which is why your bank is only willing to go 4 loans.Once you hit somewhere around 5 houses, you will also want to consider buying umbrella insurance for your portfolio.Best of luck!

If you are going to do it, you should max out your rentals regarding liability insurance (mine is 500k) and also get an umbrella policy (i'm at 2M). 

Have $500k liability ins and an umbrella policy if you like.  

Yes, we have LLCs and umbrella policies but is that enough?  

Otherwise, just get a good umbrella policy.

As of now, good insurance policy + a strong umbrella policy should be enough.....

I currently have an umbrella policy.

I run my business under the umbrella of Keller Williams with few restrictions. 

I'd seriously consider adding an umbrella on top of this and make sure this quote or estimate is legit.3)  Property Tax out that way sure ain't cheap.  

2) If less than $1,000,000 I would consider getting an umbrella policy attached to your primary residence.