Hi,
Sounds like the motors will work fine with AstroEQ. The gear ratio also appears to be high enough - you get a resolution of 0.47 arcseconds/microstep.
I've attached a .conf file for the configuration utility for your mount.
I'm not sure what the top speed will be, but it looks like it should perform well. I've put ~400x as the goto speed in the config file, but you can increase or decrease this depending on whether the motors can't go that fast or can go faster. As the drive voltage is only 12V, this may limit the performance slightly but hopefully not too much.
Regards.
Tom.