I did try alot with Fine Golden Rose + Refine Gold by primary. With book 4 I got Purple Boots Lv48 and no book I got full of Golden Qi Pao, non of Grey or Gray gown up.

With non book, max up rank U can get is +5, and Refine Golden Rose with Refine Gold rank 18 to get rank 25 is impossible! This way jump7. There is the way Refine Golden Rose + Fine Grass + book4 to get Gray Gown!