Setting out this weekend with the aim to shoot some Fuji Acros 100 to develop in Caffenol. I have just got all the ingredients together, this is my first attempt at Caffenol developmental (I developed plenty of films in Rodinal and HC-110). Question: should I expose the Acros at EI 100 or EI 200? It is quite gloomy here in Luxembourg this weekend with lots of rain. Thanks for your input.