Very inspirational Pesty! The long arm thing is difficult as I am 6'2 and have the same issue. I agree 100% with Old Fella about the triceps. They make my arms look bigger period and I can seem to grow them. My bi's pump up good and then I stretch my arm out to normal and they recede back inside the bone apparently!
I'm 47 and on my way down from 265 or so, currently 245, heading to 215. I wish I had the metabolism you have, instead I am blessed with the ability to survive times of famine, which, when you think about it, used to be a superior traiit! Not so much today, however.
Seeing pics like this from you and Old Fella, Brick, etc certainly helps know what is achievable while maintaining a "healthy" lifestyle at our "advanced" age.
Keep up the great work!
Pekkerwood