what dew heater do you recommend for this scope? Preferably one that will work with a USB batter pack as I don't want to purchase a controller (I am a begginer astrophotographer).

This dew heater would work for it, it's 16.9" in length and USB powered

Is this good for taking pictures of the moon?

The RedCat is a short focal length scope (250mm F/4.9) which gives it a pretty wide view of the sky.  The moon would fill about 40 to 50% of the view if taken with an ASI224MC camera.  
Please see the attached image for a simulation of what the moon would look like.
To have more magnification, a scope with a longer focal length would be used.
This site was used to generate the view simulation: https://astronomy.tools/calculators/field_of_view/