@ Gary... we've all been there, and it don't get any easier the older we get
. Fortunately, you're an obsessive enough person that I know you'll get 'er done when you put your mind to it. 1600 might be a bit too much below your maintenance though. Even at your height, that seems a little low. I'm guessing that's probably a 700-1000 daily deficit for you??
The biggest thing I'm finding is all the little aches and pains - stuff that is more than just DOMS, but not an injury - takes MONTHS to go away. Right now, my left forearm and side delt are routinely aching depending on the load and/or movement.
Still chugging away at it though.