I count only 16 segments for the total trip. Also you have used only 2 of 4 free flights in SWP and EUR/ME plus only 4 of 6 in NAM. You can easily add a LHR-DXB-LHR for more tier points (long-haul). The PER-CGK flight is less than 2000 miles, so low number of tier points. Perhaps use an extra segment to go PER-SYD-CGK, both flights over 2000 miles.