The ASI294 is quite an old camera with an obsolete sensor (IMX294CJK micro 4/3 sensor) so no chance of that.
The current choices are the 2600 or 585.
The position of the guide sensor in the 585 however is odd, too far off-centre.
What IMHO would be nice is a camera with square sensor like the 11mm x 11mm one in the 533, with a guide sensor.