Yes, you are right. Every single pixel is waterproof has resistor built in.The LEDs are rated for 5V, does that mean they have built-in resistors? Just to make sure.
I didn't draw it in the other post because I was assuming they have them...
Btw, now that you mentioned heatsick. I have thought of that as well. Can you suggest on that?I am not too sure which type to go.