Personally, I would not devote a whole session to each lift. Benching once per week is not enough IMO. I recommend you try a program where you train each major lift and muscle group 2-3 times per week, such as Sheiko, Candito Strength program, Russian Squat Routine (can be run for bench as well), upper/lower split, or something else that has been tested. If you decide to train with higher frequency and train many bodyparts per session, it is very important that you do less for each bodypart per session than now.
Don't just create your own program with fixed set and rep ranges and add weight when you can. Linear progression like that rarely work well beyond noob stages. Instead, pick a strength program (because they usually have much more complex progression plans) preferable based on percentages, and add whatever hypertrophy work you want.
The reason IMO that you want to train with a higher frequency than once per week:
1) The protein synthesis is only elevated 24-48 hours post workout for someone who has been lifting for a while and is natural. That means, that after 1 day or 2, the muscle will not grow any longer from the last session. If you only bench and train you chest once per week, that leaves 5-6 days a week of no chest growth.
2) Training the lift more often but with lower volume per session will decrease the DOMS.
3) There is no need to devote a full session to one muscle group to make it grow. Your bench day has 15 sets for chest. 2 exercises with 3-5 working sets each would be enough to make it grow. That goes for all body parts.
Also, no squats?
Thanks everyone for the feedback. I probably should have clarified that some weeks I will make it to the gym more than four days a week and therefore end up with an extra chest day or extra shoulder day. Based on what I am hearing that still doesnt address the issue. I will look into some of the cycles that Conceptionist suggested and think about retooling my routine to hit more bodyparts at lower volumes more frequently.
I tore the labrum in my hip a few years ago and decided to lay off squatting as a result.
Would you all recommend more compound lifts and less targeted accessory work?