First of all, I tip my hat off to you. I'm about as the same age as you, so I can appreciate the challenge. Macro-cycles like these are always fun. I often did them without a preparatory macro-cycle, and this has always proven to be a mistake. Such a macro-cylce prepares the overall body and mind for ab easier transition between these two macro-cyles. With the body better prepared after the first macro-cycle, you can confidently go into a more "intensive" macro-cycle, and include bands to accommodate resistance, which I have noticed that the program, which you have posted, neglects. I think it would be wise to also vary the exercises to prevent over-training, and especially injury. Even minor variations concerning the vector of the bar, from target movements, like the squat and bench, can be very effective. Well, that's my feedback. I hope it was some help.