Around what Ranged lvl should I get Ava's? (Pure)

I'm lvl 52 in Ranged now, but I'm not sure if getting 15 Prayer at a relatively low CB (35) is worth the 2 extra levels yet. Picking up knives or arrows is sort of distracting me from the fight, and there have been times it resulted in me getting ko'd (although I'm not risking much at all, the downtime in general is just annoying). Give me your thoughts.

 

Me personally, I got the quests out of the way first, but that's because I already know what build I'm going for. If you want to try out different lower level builds then don't do it, however if your account is going to be say 60 attack pure with high range & strength then complete the quest! Makes training and PKing that little bit easier

 

asap as it's super useful for range bonus and money saved