I'm going to follow this but I'm also going to take a step forward and modify the effector either replacing with a smart effector or similar. I've removed my flying extruder and done a direct mount:
https://openbuilds.com/builds/tevo-little-monster-direct-mount-extruder.6905/
This relieved some issues I had with the bowden line, however I ended up with an odd jamming issue, where at the top of the throat I would collect liquid goo (perhaps the temp was too high for this ABS) which would solidify effectively creating a blockage.
In the process of removing the blockage, I bent the pin of the BLTouch beyond repair, and began to contemplate why the BLTouch sucks. (The hard plastic of the shell of the BLTouch ought to extend down the pin shaft so it doesn't ever have a chance to bend!) For $45 to replace that's just… lame. So, the Smart Effector is probably a next step. Problem is I now have to design a new way to mount the coldend.
I'm looking forward to doing this conversion. I have yet to actually print with the Tevo Little Monster. I was able to do an extrusion.