Syncing to level 80 is a lot, that s why i was also proposing to sync just to level 50 or 60.

Tell me which job with its level 50 abilities will break a party content level 10-49 ?

Example : I am a BLM level 74 and have totorak and i will be sync 27 with my abilities of level 50 (except Thunder 3 who will be Thunder 1).