^^ to add to this though, I don't think you're 22%. I'd go with 18%, tops. So recalculating:
160lbs @ 18% = 130lbs lean, 30lbs fat (roughly)
150lbs @ 15% = 127.5 lean, 22.5 fat
Point being - I think you'll land somewhere around 150lbs. 145lbs would be pushing it (assuming my BF estimate is close), and 140lbs would definitely be too low. So, smile. You have less progress to make than you think!
