Upgrade to membership for botting dungeoneering?

I've got a 1 def str pure I'm botting dungeoneering for right now. He's f2p, and at 82 dungeoneering.

Would buying membership help increase my exp/hr on this account, or would there be too big of a difficulty gap, and my experience rates would drop?

Also wondering if I should keep him at 45 attack to f2p pk with gravite, or get him up to 80 for the chaotics? I'm most likely going to sell him in the end, so what would be worth more?

 

Upgrading to membership proves to be beneficial to dungeoneering training when you can do more than floor 30 (level 69), so go for it. And chaotics are worth more, gravite weapons get boring after half an hour

 

Yeah, upgrade him to members. Better xp/hr and I would get him to 80 attack for more cash in the end.