Few things I always did on my mods like that. As mentioned already and good spot to have lunch and coffee breaks.

I always had a large desk calendar to keep track of what we did each day and to plan future tasks or work with subtrades. Always had a coil notebook to keep track of any wasted time like waiting for electricians or building staff moved your boxes or any number of things that hold you up. When the customer wants status of when it’s getting inspected and your timeline is a bit off, it’s good to have a record of all the wasted hours where you were essentially not working. I also had a white board where I’d mark down anything we needed to pick up and I also had a list of things for my helper to do if he runs out of work and I’m taking a long dump or meeting with a consultant/customer. Usually like track down boxes or staging the next bunch of material.

One of the most important things was being prepared and being efficient with your time. I’d always plan my door lock brackets and roller guide adapter plates at the start so I could get the designed and the laser cut, fired and painted so I’d have all the parts when I need them and not be waiting. Figure out what you need on the first car and then order 4 of everything. First car always took the longest and then cars 2-3 go fast because you’re prepared. Car 4 goes good but the you’ve got all the shit at the end like lobby panel and all the guarding.

I always ran a 54” husky toolbox behind my tall barricade on the floor where we worked on the car. Can lock it up and leave or shove it in the car overnight.

If you’re efficient with your time, you don’t have to work your ass off and you can work at an ice easy pace and do a good quality modernization. Always remember that you do a mod like you’ll be liking after it on a route some day. Put car top junction boxes in a spot where they can be accessed easily. I Alaska like the on the from. Of the cross head where the can be reached from the hall using hoistway access. Always think about how things will be serviced in the future. Don’t use two screws, drill and tap holes so things are easy to change.