Hi Cass,
If you are already doing weight training exercises like lunges, squats, leg curl, leg pushs, etc then you can do same exercises by making it a 2 sets of 10 counts with heavy weights to tone your thighs. Include only 20 min of brisk walking along with your concern area exercises. Following this type of exercises pattern would help to reduce your thighs inch wise and give it more firmer look.