You might lose some muscle mass that you accumulated but you won't gain weight unless you consume too many calories. Also, you don't need to workout in order to lose weight. Working out is for fitness and eating less calories is for weight loss. Sure, working out makes you burn some of those calories but you could just avoid eating them in the first place. I hope that makes sense!
First goal: under 180:
Second goal: 175 or below:
Third goal: 168 (no longer overweight):
Fourth goal: 160 or below:
Final goal: 145-155 (not sure if this will ever happen):