First off, if you want one get it. But know you can't buy a property with a loan in the name of an LLC. So you'll buy it in your name then transfer it into the LLC.
Here's my take on LLC vs No LLC. If you only have one or two highly leveraged properties and you don't have millions in the bank, an LLC isn't needed right away. Good property management (ie, fix sh1t before it becomes a hazard), and a 2 or 3 million dollar umbrella policy can be enough.
If you are really negligent and someone gets hurt on your property, good luck keeping their lawyers away from your stash with or without an LLC.
I went a solid decade before I got an LLC. It took me that long to get to where i'd be considered a target. I also have a 3 mill umbrella policy along with the LLC.
Oh, i'm not a lawyer so if someone has real world examples of when an umbrella policy didn't work and someone got wiped out, i'd love to hear it.