I'm also 5'3, I imagine at 122 you are already pretty slender so I'm not sure about a whole six inches....I mean, it's doable, but I guess I just have this vision in my head of an already small frame losing another six inches around the midsection and it just seems pretty extreme. People carry weight differently though so I may be way off.

Goal clothes are a great idea, I have my "skinny jeans" and I also kept a pair of size 14 jeans from when I was 199 lbs and I like to slip them on from time to time and stand in front of the mirror and feel good about far I've come and it's a reminder that I can keep going because I have already come such a long way.