So in the end I campden tableted the juice then took a gallon of each to a demijohn and blended the rest. A total of 38 litres.
I added tannin but not as much as I'd add to supermarket juice, it was around 1tsp to 3 gallons in the end.
No pectolase, I want it cloudy.
No nutrient, there will either be enough in the juice or the yeast will crap out early and not go totally dry. Either way is good...
Pitched two packs of Gervin GV13 Cider yeast and its off and picking up pace 24 hours later.
So far, so good.