Jakarta itself is extreme lowland, barely above sea level, but mountains range behind it. Your instincts to move to the edge of the city, particularly close to any mountains, is well founded thus. Bear in mind that your island, Java, will be subject to pulling down as the tongue of the Eurasian Plate dives under the Indo-Australian Plate. Flooding of Jakarta will begin, and likely drive you out of the city, which in the scheme of things is not such a bad thing.
Note Indonesia Tongue commentary.
Note Sinking Pace commentary.