Consider a good quality Umbrella policy before you worry about entities first.

Having an umbrella policy in place to cover the LLC is a very cheap insurance policy to help avoid this attempt.

@Brad Clarizio With 6 units, it may be more cost effective to purchase a $1M -$2M Umbrella policy. 

I just got an umbrella policy from my insurance provider instead.

When you do not have a lot of houses, litigation risk is relatively small and a good rental insurance policy + umbrella policy (e.g., $1M+) should suffice.

You can use an umbrella policy until you get a larger portfolio.

Since I am just starting out I will start a sole prop. with an umbrella insurance policy.

You can supplement this with an umbrella policy that covers you on the back end for any non property related losses such as a car accident.

I just purchased a membership to a service that offers unlimited legal advice, and I have already contacted them several times.Beyond avoiding lawsuits, I have purchased large liability policies on my properties and an umbrella liability policy to help cover the expenses related to a lawsuit if I ever end up in one.

If you have substantial assets, you should look at an umbrella policy on top of that.