What level to return to Trials?

So I skipped the Trials of Sekhemas in Act 2 due to the Honor system and am in Act 3 now.

Do I need to go back and attempt to win for Ascendency reasons on my Warrior or can I come back to it later on?

First tome POE player and was not sure the Trial was something to return to at a much higher level or if it's necessary to do now to improve my Warrior.