We looked into it pretty hard. Here is the deal, once you do it your locked. Its essentially like a contract, and understandably so because your getting a substantial discount on taxes. We did not do it (yet). I highly suggest doing whatever modifications, logging and any other changes to your property before hand. Once you are a part of the program you have to get approval for anything and everything.
End result we hired a forrestor and we are having about 2/3 of our property selectivity logged next year. Some of that 2/3 is being hand logged, some is commercial, the other 1/3 is not ready yet. Just be careful before you make that decision to join the program and or be logged. Research is key.