Dense nugs come from ample lighting.
Cure zone for nugs is 60-65%RH. You should have a 40-50% rh for storage. IME, less than 40% RH starts to compromise quality.
Drying is important because you cannot cure unless it is dry enough. Cure is important to some, but not all---curing is what makes the smoke smoother, tastier, and smell better. However, curing is not necessary---just like aging wine is not necessary after it is fermented....but most people age wine because they want a smoother taste, better taste, and a better nose(smell).