If your hooked on a long cycle like that you should look into a blast and cruise strategy as stated in Ronnie Rowlands post called "YOULL WANT TO READ THIS" the shortest cycle he recommends is 5 months!!! Its an interesting read anyway even if you dont follow it and will help you with a lot of the questions you have. But at 37 i dont know many who would recommend you follow such a protocol because you will more than likely end up on trt at some point