Family Crest Levels?

[Oddzwiggles]

I'm currently trying to get the quest Family Crest done. I'm having difficulty with defeating the demon in the dungeon south of Edgeville and was wondering if anyone had any suggested levels I should be working towards to be able to pass this challenge.

[the evil one]

""You may make use of the safespot in the north-west side of the cave, behind the space between the stalagmite and the torch. You may have to kill the aggressive poison spiders, but they can't attack you once you are in position.

You must use each of Air, Water, Earth, and Fire Blast to defeat Chronozon. They can be auto-casted, and abilities work. The blast spells must damage the demon, therefore bringing extra runes is advised due to the possibility of a spell splashing. An elemental battlestaff, or air runes and a mindspike to change the element can be used to save on elemental runes. You can also use a Deathtouched dart to defeat Chronozon without casting any of the spells.

You must continue to attack using the blast spell until you receive the message "... Blast seems to have done all it will to Chronozon", at which point you must switch to another Blast spell. After you cast the blast spells successfully, you can fight Chronozon however you like. If you leave the area or logout during the fight, Chronozon will be restored to full health and you will have to recast the spells, even if you had already weakened him.""

https://runescape.wiki/w/Family_Crest

level won't really matter if you stick to that