My goodness OP...4 islands??? I used to have two islands but ended up deleting my second one a couple days ago due to rarely ever playing it...I couldn't imagine having 4. I grossly underestimated just how much work it would take to manage multiple islands at the same time. The main reason I bought a second copy in the first place was to have more villagers as I found the 10 max limit wasn't enough (still don't...should be 15 imo). I think I'll just give away my second copy to some random kid or maybe I'll just hold onto it in case I finally stop being forever alone and find the love of my life to start a new island with