If you had good feedback on your previous profile then I would reactivate it, and just re-write your profile and new photos to reflect what you're now offering.
When I first started I did outcalls during evenings and I did incall days at airport hotels pretty much every weekend, and didn't have any problems. I just put on my profile that I had limited availability as this was my second job.
I'm a size 14-16 and have plenty of work. Market yourself specifically as curvaceous, big boobs, big bum, MILF. Get photos that enhance your curves, rather than hiding them. Believe me there are very many men out there who love curvy ladies
If there is a lack of ladies advertising in this size range, I think that's more because a lot of women believe that if they're bigger than a size 12 they are fat and nobody would fancy them