Training upper arms one day is an overload.
Chest / tris / shoulders
back / bis
compnounded exercises are great for adding mass.
but if your gonna train specific parts of your body, keep those areas somewhere around 30% of your training and focus more on compund. y endurance if your training for mass? y the neck exercises? prioritize them soewhere in shoulder and back. and for gods sack train abds. more then just once. i woulc recomend 3 times minimum. also try to keep your workout under 40 mins. this is gonna be hard if you are one of those psychological lifters who just needs to be in the gym.
i would strongly recomend picking up Ian King's "how to write strength training programs"