I've tested out EAA using something as cheap as a 224MC with a 300mm f/4 Canon lens for a simple, lightweight EAA setup & it works well using 10s to 30s exposures, especially on smaller targets. As EAA isn't a search for the perfect image, the thermal noise from a non-cooled camera is insignificant, you will still get good stacked images that work well on a monitor.
My cooled camera is only mono, so not the best for EAA in general where people want to see the colour so it's either the 224MC or a DSLR. And both work for me. I am thinking about the 294MC non-cooled later for EAA & to simplify my RGB collection to compliment NB data.
Cheers,
Mark