Having briefly studied LLC when registering my own business, I would have to recommend against using that type of arrangement for your personal life. That's a lot of headache for not a lot of protection. A simple lawyer drafted contract is much cheaper, only requires updating when you make changes (instead of yearly filings) and is overall much more simple. Your will needs to be in order, and you should arrange for living agreement contracts if you plan to live with multiple people. People should do this with roommates too. I never understood why people didn't set that up. Written contracts for everything in life, people.
"Regret for the things we did can be tempered by time; it is the regret for the things we did not do that is inconsolable." - Sydney Smith
Kyle: 27 year old male
Katie (rymmare): 25 year old female
Kids: girl: 5 years old, boy: 3 years old