Good thoughts, Ssandra. I have the same question, how long have you all been together? If it's been years and your dynamics are all going great, awesome! If this is less than a year old, I would strongly caution against everyone living together. Living together can bring to light problems that were hidden before, or exacerbate old ones, without the option for people to as easily just take some space if they need it (especially with three adults and two kids in the house, it'll be crowded!). Explaining to your kids about your situation will be straightforward enough in the end. Explaining to them why everyone is always fighting, and then why one person is moving out, if this move was premature? That will be much harder.
Me, 30ish bi female, been doing solo poly for roughly 5 years. Gia, Clay, and Pike, my partners. Davis, ex/friend/"it's complicated." Eric, Gia's husband. Bee, Gia and Eric's toddler.