This node lets you merge two full Krea 2 bf16 models and up to three LoRAs and quantize to int8/int4
https://github.com/tritant/ComfyUI_Krea2_ModelMerger_Converter_int8_int4
git clone https://github.com/tritant/ComfyUI_Krea2_ModelMerger_Converter_int8_int4
comfy node install comfyui_krea2_modelmerger_converter_int8_int4