I'd think it shoudln't be too hard to add more than the 10 stock islands, should be as simple as inserting more with the same stock coding for however many you need (I believe primarily just the island file in the cache_Builders/custom directory). I'm not sure if there is a file which holds the amount though; as I'm heading out the door for my 4th wedding anniversary I don't really have the time to check right this second; but I'll give it a lookise tonight when I get home.