I personally believe that it's healthiest to lose weight slowly through increased exercise rather than increased calorie restriction. This tends to produce the best results in the long-term in terms of body composition, health and basal metabolic rate.
I think it'd be a good idea to try techniques like IFing before restricting calories further. That's what I'm experimenting with now, as I think I only want to lose another 16 lbs. I also plan to spend one or two weekends a month doing long hikes (15 km +) both on Saturday and Sunday for further body fat reduction.
I'm not prepared to try chronic low carb or low calorie because it tends to lower basal metabolic rate - not for everyone but that seems especially common for women.
F 5 ft 3. HW: 196 lbs. Primal SW (May 2011): 182 lbs (42% BF)... W June '12: 160 lbs (29% BF) (UK size 12, US size 8). GW: ~24% BF - have ditched the scales til I fit into a pair of UK size 10 bootcut jeans. Currently aligning towards 'The Perfect Health Diet' having swapped some fat for potatoes.