Best to make it simple. Find out how much force is needed to move the trolley. Then find out how much thrust the 19x10 prop will put out. Depends on the prop design, but typical of a 19x10 is around 17 to 18 pounds of thrust between 7000 to 7500 rpm.
At 24 volts, and 230kv equals about 5500 rpm. So might be nice to gear it, to get a little more rpm. It should not come close to the power rating of the motor, unless used with a larger prop.
I don't have numbers on a 19x10 at such low rpm, but I figure it would move the trolley.
