You're doing really well matey.
I hope you're feeding yourself properly though, you still need to eat well to lose weight - so many people don't realise this.
Carbs can come down, but should still contribute to about 50-60% of your calorific iintake, and aim for no more than 0.5kg of weight loss per week - that's more than enough.
Keep your EFAs up, and whilst sat fats aren't the evil things once thought to be, though it's the MCT's (Medium Chain Triglycerides) that are good for you. The rest need to be moderated, but not necessarily excluded completely. It's the hydrogenates and emulsified fats that are baaaad.
Dropping your cals by a mere 15% is all you should need to minimise lean tissue loss and your RMR (resting metabolic rate).
As has always been said, the best way to increase RMR is increasing lean body mass, and follow a high intensity program. Therefore incorporating some HIIT with a good full body workout incorporating big compounds will help maintain muscle mass and help lose bodyfat.
Eating carbs and proteins and minimising fat (not EFAs) can optimise thermogenisis (the thermogenic effect) and as such increase fat loss, though this is a synergy between the other point about sat fats - it's a balance, but if in doubt stick to this thought.
Just thought I'd add my thoughts, but they're just thoughts.
Keep at it mate you're doing brilliantly.