it take's time for a good drying cure so the chlorophyl can break down gradually,(that's what you're tasting)4day's is not enough time for this process to occur,45-55rh and mid 70'sfh in a dark well ventillated area for 10-14day's will give you a good tasteing harvest,other than that you seem to be doing every else alright,dont worry about the greeness,you're soil is just nute rich,just dont feed 3WK's prior to the harvest and just water as usual,the soil will break down what nutes are left or the plant will use them up....bonbon