I just realized the times I told you first are what it takes me to time and typeset (I'm used to do both...but typesetting takes me forever since I'm quite the perfectionist when it comes to choose the right font, the style and position of any sign that may pop up ><).
So, all in all I'm pretty sure I can do those 4 vids by 31 oct (let's say... 3 of 20 min and 1 of 40? probably up to 5 if all of them are around 20 min).