Me(F23)my best friend(F21)and my boyfriend(M22) are thinking about moving in together. Is it a good idea?

( Names changed for privacy reasons) I (23F) and my boyfriend Kevin (22M) have been together for over 5 years living together for 3 years. We have been plannig on moving to a different city were my bestie Margo (F21) lives. We have been inseparable for many years and margo and kevin get along great almost like siblings, margo lived with us for a few months after some difficulties she had and it worked out great, only problem was the space since she was sleeping in our sofa, but everything else was completely fine. After that she moved in right next door so we were neighbors and we got even closer as group. Now she lives in a bigger city and me and my partner have plans of moving there because of job and study opportunities. So we are thinking about moving in together as roommates for cheaper rent and also margo and i have been thinking about it for quite some time. Now obviously we have thought about all the pros and cons and have talked about it a lot. But im also a bit scared of how it would change my relationship with Kevin since we had a rough patch before and are now in a better place as a couple. And also my relationship with margo. Can you guys give us some advice or share experiences?