Go for the scholarship option as results of CE 16 suggests that FPSC is in no mood to alter the existing pass ratios. One or two subjects will be targeted and the onus will be laid on our faulty education system.

Secondly, as you said, that availing scholarships will open you new avenues, so don't risk it for unpredictable CSS

If you are well with in the age limits, then after scholarship or during job, you can take an attempt, for the fun of it. (Even if you want to)