Chin up negative scheduling
I have a couple quick questions on how best I should be programming assistance exercises into my training. Right now I train the program on Mon, Wed and Fri mornings before work. On Mon and Fri evenings I currently do Chin-up Negatives, and if needed Pin Presses and Bench Pin Presses.
First off is how to best program chin-up negatives in. I'm 59yo and currently running the NLP, following the "Masters early novice program" 2B on page 195 of the Barbell Prescription book. I'm currently doing Lat Pulldowns on Wednesday mornings in place of deadlifts according to the plan laid out there; my body is still doing well with deadlifts on Monday and Friday so I'm still doing them twice a week. Since my goal is to get back to being able to unassisted Chins, should I be doing both Lat Pulldowns as prescribed in the book along with Negatives later in the day, or at the same time, or should the Negatives (or banded Chins) replace Pulldowns altogether? Are the Pulldowns still beneficial or would either of the actual Chins be better?
Lastly, am I fitting the two Pin Presses into my training properly, doing them separately from my training so as not to interfere with the program? I only work them when I feel either my Press or Bench is about to get to a sticking point and it's seemed to help so far.
Thanks for any help here.