I am trying to create a 64x64 portable LED Matrix that runs the SmartMatrix Animated GIF Player. I've done some research but need some guidance. I am a complete newbie when it comes to electronics. Right now I am looking at using the Teensy 3.6 with the SmartMatrix SmartLED Shield v4. What 64x64 LED matrix is compatible with this setup? Adafruit only sells one 64x64 display but the pitch is too small. I want a larger display. I found this on Sparkfun but I am not sure it is compatible with the Teensy. The description says it is not compatible with Arduino because it requires an extra pin for multiplexing. If this is not compatible what are my other options?

Regarding power...what is the best way to power this project with portable power. I have a large Anker battery, for example, that provides 3A per port. Is this sufficient to supply a Teensy and a 64x64 LED matrix for a few hours?

Thank you for any advice.