Need explanation- electronics to operate screw drive

[JDH429]

Just joined up and am full of questions which i cant seem to find a clear explanation on. Im planning and still gathering for a dump trailer project which will utilize a screw drive. I think i have the moving parts figured out but am unclear how the electronics will work. Im pretty new when it comes to this part.
I recently put in a huge order with Garden Trucking and emailed them about how i can set up the gear motor to operate using end points. Ric replied "Use # 295s it has limit switchs" and gave this diagram.



They have usually been pretty short in emails in my experience and figured they wouldnt have the time on the phone either for "new" questions so..

-Is this what you need to use to operate a gear motor for a screw drive?

Ive searched and found nothing that explains how the radio operates...

-What type esc(BEC) or escs are needed (more than 1?). How do you run two escs on one RX...AND what radio is used?

-Is a 4 channel rx/tx used and one stick is used for forward and reverse motor operation? or is a toggle switch wired into the transmitter (no clue how to do that)?

I think i want to use this motor because ive read that you want at least 50 rpm if using a fine pitched threaded rod for the screw. (was planning on 1/4 28 threaded rod)
http://www.servocity.com/html/81_rpm_gear_motor.html

but this motor operates on 12 v and im not running 12 volts in my tractor...or am I? Oh man...its enough to lose sleep over. Then what batteries...?

Need big help as you can see. Thanks for looking to anyone who thinks they have the time.... and, "To put something in layman's terms is to describe a complex or technical issue using words and terms that the average individual has no freakin clue about"... Yes! exactly.