I have lived in Haik’u on Maui, outside of pahoa on hilo side of the big island and have a place in ocean view closer to Kona side. I don’t know if you have ever gotten deep into puna, but if not born and raised there let’s just say there is not a lot of aloha for outsiders. Honestly, the cost of land is less expensive on the big island I agree but the quality of the land available is questionable, Kona side all lava and it’s a hardscrabble existence trying to grow, Hilo side most plots larger than I acres are gone and the land available are called spaghetti lots as they are usually around 70’ wide by 300’ deep.
This is why I prefer Maui and making a large purchase and dividing it up. Less hardcore on Maui, more fertile land available, more services and people willing to help, and honestly it does not cost a lot more to live on Maui than other places unless you want to buy at the stores instead of living off of the land, plenty of wild chickens and eggs, plenty of boar, plenty of fruit, waters are more stable for fishing, share a cow if you want etc.