I can't edit my post so I will reply to it.
And by set up, I don't neccassrary mean the business, although its more how you "set up" the structure of it. It will be more correct to say, "How you structure your business."
To meet FEIE requirements you will need your US LLC to be owned by an International Corporation, like a Belize IBC. You can't be an employee,︀ otherwise you will still have to pay taxes. Thats why it has to be a︁ corp. You also can't sell your services as an hourly service. Like if your enengineer.︂ No engineering or freelance with this "Set up". You can do freelance but you would︃ have to "set it up" differnetly and I don't remember that process.
You can still︄ sell engineering work or freelancer work and not pay any taxes but you HAVE to︅ hire employees or hire out the work. YOU can't do it, otherwise self employeement taxes︆ apply. They are high like 15.3% if I am not mistaken. Remember for this to︇ work you have to set it out and operate in a way that your the︈ corp. shareholder and your not doing the work.