In terms of your training:
You really want to avoid training your shoulders after chest since they get hit hard on all the press exercises (bench, etc) anyway. I also don't recommend hitting your shoulders more than once every 5 days (like all muscle groups) because on a cut too much volume is definetly your enemy.
Diet:
I would swap the whey protein for a whey/casein mix or simply casein - studies show its more effective at preserving muscle, especially on a cut.
If your going to stick with whey, their is no need to add additional BCAAs since whey has the highest amount of BCAAS of any protein source.
You won't need the coQ10 unless you have heart problems and the HMB is also pretty useless unless your a complete rookie when it comes to lifting.
For your pct:
Torem should be enough for pct but if you decide to use clomid aswell then you would need to go half an half with both.
I'm not sure if theirs an advantage to using half clomid half torem or just torem alone, but I'm not an expert in this area so I'll let others chime in
Since you got down to 6% really well last time bro, their really isn't much difference in terms of your approach to getting below it.
You might need to incorporate refeed days (high carb, high cal, low fat) if you drastically reduce your carb intake as you get leaner but this would depend on how large a caloric deficit your going to be running & how much cardio you start doing (if any).
Otherwise, you will need to pay a little more attention to your electrolyte balances, water intake, carbs etc, but I'd only really be worried about this if your prepping for a show - it won't effect you getting below 6% (only looking dry/hard).