Need suggestion for Model training method selection. Dreambooth/LoRa

Hi, I’m a beginner for AI painting. I want to train a unique art style that is different from the exist popular model(such as ChilloutMix). Wondering whether should i choose the Dreambooth of LoRa to train a model. Should i just bulid a entire new model by Dreambooth to chase to unique style or i can make a little adjustment on exist model by LoRa. Or someone guru could teach me where is the limitation of both method.
Many many thanks