For the record, I'm not trying to bash your hopes and dreams. I held the same idea in my head when I was newer to poly, that an FMF triad was my ideal. I'm not trying to say, at all, that it's bad of you to want this -- just that it's important to look carefully at the reasons you might want to let it go.
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.