I have the 153's and I'm 5'8" and...well, a bit heavier than you.
I wanted the 163's (or a comparable size, whatever they had when I got them), but all they had left were the 153's and I was assured they would be fine. Yeah, they're okay, but like you, I think I would like to have a bit more material under me. My last skis (more like red and black noodles, they were so floppy) were 170's. Before that, I had 177's, so my skis keep getting shorter!
FWIW, I just ran a tape measure down the base of my DH's Atomic's. His advertised 164's are indeed 164 cm. My K2's, when I measure the same way as DH's skis, are 154...not 153.