What should I start grinding at base 70s?

So I just got my slayer helm imbued at NMZ and it got me to base 70s in my melee stats. For my low level account that felt like a big accomplishment so far.

Right now I am grinding green drags to get 70 prayer to get piety. I don’t have the fighter torso. Should I do that next? Should I try and start barrows? Other grinds?

Help a noob please! Thanks team.