To get down that low will be near impossible if you are eating rice, beans etc.. And if you domget their, you will burn too much muscle doing that.
You need to jump onto the anabolic diet (cyclical ketogenic diet). Eating only meat and fat during the week (no carbs), and then recharging on carbs for 30 hours over the weekend. Your body will turn to fat for energy, and you can nock BF% down quite easily while maintaining and increasing muscle. It has so many added benefits (like increased testosterone, increased release of growth hormone over the weekend etc). Also, you will not be hungry on this diet, and energy will increase.
Anyway, google 'Anabolic Diet pdf' and download a copy of the book..