To the question itself, I'd reckon combining the two could be possible since as far as I can tell they're both scripted solutions instead of mods. At least CE is, I did tinker with it some back in the day.
Unfortunately this place is a wee bit of a graveyard nowadays so you may not get any helpful answers, I myself have no idea what the Coin Co-op engine even is and I think it has been over a decade since I did anything with CE...