Hey, firstly great to hear you’ve been finding the Academy helpful for your game!
I would definitely suggest keeping the same blade because this is what gives you the feeling and control, I would suggest as the member above have changing to Rakza 7 2.0 on forehand or even on both sides of you feel you need a bit more speed on the backhand too.
But definitely stick to the same blade, this is where many players go wrong early in, they change the balde and go for something different or too fast and the feeling isn’t the same which makes you change your shots.
The thicker sponge will give you a bit more speed and power away from the table but not change the feeling or control too much. So I’d say go for that.
Dan 🙂