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While a bit of a pain initially to set up, 10 turns of the shaft is heaps of travel for an auto focus routine, you don't need anywhere near the full travel in use. Focusing my SCT with Voyager and a Celestron focus motor it was only going a couple of hundred steps either side of focus (The Celestron motor only had 1000 steps per rotation instead of nearly 6000 like the EAF) 5 turns away from best focus and I doubt it would even detect any stars.
I would get everything ready for the focus motor, get it in focus manually then move the motor to about 30K steps via the driver before fitting it so that best focus should be around half travel for the motor. The only time it would be a pain after that would be if you change backspacing for some reason, but you could do the same thing, set the focus motor to mid travel then remove it and focus manually before you re fit the motor. You would only need to do it once each time you change the setup. And after that you can drive the focus motor to 30,000 at the start of a session and know it is going to be close to focus.
On the C series you need to make sure to use backlash compensation, and in the case of the EAF I would use a couple of thousand steps (Half a turn of the focus shaft or so) and set the backlash direction so the final move is always to move the mirror up the baffle tube towards the corrector plate against gravity. That way the focuser assembly is in tension after each move otherwise the mirror will probably move down the tube a little over time which will impact focus and probably elongate stars too due to how the Celestron focuser works.
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