Your bf% is high.
But don't start yout cals so low, you'll be below 2000kcal before you know it and losing weight will be a pain in the a**.
I'd start off upwards of 2,500 possibly 2,700.
Do that for a few weeks and see how you fair weight wise.
Usually I'd say aim for 1g/lb bodyweight for protein, but since your bodyfat is high i'd say around 1-1.2g/lb lean body weight.
Which will probably be around 175-190g protein.
Fat, absolute minimum I'd say around 0.25g/lb bodyweight (Including and supplementation of EFAs).
Make the rest up in carbs for energy and their protein sparring effect.
Example
Energy: 2,700kcal
Protein: 190g
Fat: 70g
Carbs: 330g
Depending on your metabolic rate, this may produce weight loss (it should at your weight if followed consistently with proper training)
Of course metabolic slow dawns occur during weight loss, this is why it's best to start as high as possible.
Generally you would keep protein and fat a constant and adjust your energy deficit by adjusting your carb count.
Going from 26%bf to competing level in A short period of time will be hard, but good luck with your goal and hope you achieve it.