Teensy Running WS2801

Hey you all! I have purchased 2 WS2801 1 Meter, 32 LED Strips and intend to power them both at the same time from a Teensy 3.2.

Given one of the settings options on my product will be for all LEDs to be on (bright white light) for extended periods of time I am opting to run them from an external 5V/4A adapter. I have a couple questions I was hoping you all could help me with:

  1. If a 5V/4A adapter sounds good, what would be a good Mosfet to use if I got one for each strip (and just used the Teensy to control the flow from the adapter through the Mosfet to each strip). I know I need an N-Channel, L-Series Mosfet, but what model (V, A etc)? The calculations on that are a little beyond my comfort zone.

  2. Will the WS2801 run on full white for a while without burning out or is there another series that is more durable / reliable?

Any other advice would be more than welcome!