HECK YES! I popularized BCAA intraworkout! I believe it helps, but nothing is the holy grail. It is just another tool in your muscle building toolbox. Here is my intake:

Pre: MTS WHEY and Carb 10 (1 scoop each)

During: 2 scoops Machine Fuel

Post: MTS WHEY and Carb 10 (1 scoop each)

They DO count as carbs, no matter what those hippies say! They are "healthy", but THEY COUNT!

It is possible, but think about it. When you train chest you ALSO train shoulders and triceps with them...naturally. I believe a good split is one you enjoy, and for me I enjoy pounding 1 bodypart at a time and doing squats daily! See my program here! https://content.tigerfitness.com/squat-every-day-rehab-health/

This should help! https://content.tigerfitness.com/daily-salt-intake/

ADJUST! Either lower calories by about 200-250 or raise cardio a bit

I personally like Carb loading Friday and Depleting Tues-Thursday. The backload, if done right, is the best option

They both have their place--muscle knows OVERLOAD! Do them both!

If you want strength, get on a strength program. Here is a good one: https://content.tigerfitness.com/shaw-6-week-strength-program/

I take CLASH before every training session. And since there is Teacrine in it, habituation or desensitizing to it is not an issue!

2 things

1) You don't have much muscle in your abs, you need to build it with Goblet Squats, Deadlifts, etc.

2) You are not 6%, looks more like 8-9%

You need to build muscle and lose more fat. I would reverse diet, LIFT HARD and gain 2lb a month using www.massdiet.com. Once around 12% or so bodyfat, cut down. This should look a lot more crisp than what you have now. For a good diet see www.dropfactorbook.com