Kim Jae-gyu's assassination of Park Chung-hee was unplanned, right??

‌Since Cha Ji-chul kept humiliating President Park in front of him,
he snapped in the moment and shot him,
then impulsively went to the Army Headquarters...
If it had been planned from the start, he obviously should have gone to the KCIA.
Even if Kim Kye-won enticed him halfway through,
the fact remains that he walked straight into the tiger's den on his own.