If PR is anything like Miami, you won't have too much to worry about as far as low humidity is concerned. I now live in a semi-desert region, and I have not had a uke crack on me yet. it happens, and when it does, well you get it fixed. In my opinion, most solid wood ukes[ at least solid tops] sound better than their laminate cousins. there are some exceptions [Kiwaya] , but their laminate costs more than some solis wood ukes. jusst get what you want and what sounds best to you. some of my best ukes came pre cracked, they are cheaper too.