well it will be suck a waste to train with trainign tickets after 180 since it give the minimum xp only i think its pointless to waste them for after 180 training i rather keep them for after reborn
u can jsut finish all caps quests and atent 15 round challange event for caps every week and do xp instances eevrday but i dont think it help much
all other ways to gain xp will be sure really slow and painful