I would suggest that you replace those BCAA doses with your Whey shake. If you aren't using whey isolate, switch to that one. The only difference between those two is, BCAA's are taken instantly while isolate might take 30-60 mins to become absorbed.
generally, a 90-95% protein rate whey isolate contains 5-8 grams of BCAA and costs around the 1/4th of the price.
If it doesn't imbalance your caloric intake, I would spend the money on the whey. but if additional 3 scoops of whey extra in your current diet to replace BCAA might hinder your diet (that is an additional 300-400kcal compared to 50kcals of BCAAs you are taking as far as I can guess), then stick to it. There is no harm in it.
If you wanna add something new to your supplements I would advice adding the following to your pre-workout supplementation:
200mg caffeine (3 cups of strong coffee an hour before training)
Beta-Alanine (2-5g) in case you don't like the tingling sensation or you use beta-blockers for anti-immunogens by any chance, it is a well advised supplement for your pre-workout and allround health.
Arginine alpha-ketoglutarate (AKG) is a nice synthesis and Nitric balancer for during your workouts which helps a lot in general.
Citrulline Mallate - I would take this if you can afford this instead of AKG, but it is costly.
More than that, I would advice not to take any supplementation except good coffee whey and creatine monohydrate in micronized creapure brand. You can do 95% as good as with those. Those pre- and pos- workout supplement blends are only for those who build muscle for work, extreme hobby or obsession of as a pure goal. If you are doing it for fun and the looks, it is not even necessary to use BCAAs.