Guild PQ

So I'm wondering at what level could I fight Ergoth ( Ergoth 115 150,000 1,700,000 25 Ice strong, Fire strong, Lightning strong, Holy strong, Poison strong, Dark strong )

I wanna GPQ with my guild , what level would the party need to be to sucessfully beat him and the rest of the PQ.
were there any changes made to GPQ?

also, at what level can I efficently fight the following things - Scarlion , Targar , Zakum , Pap , Dragon Rider , CWKPQ bosses ?

if classes matter then Battlemage and I go everywhere with an Aran , so we both need to be able to do them and we always stay the same level. so the minimum to do these things decently or efficently is the info I'm looking for. Thank you ~

also, at what level can I efficently fight the following things - Scarlion , Targar , Zakum , Pap , Dragon Rider , CWKPQ bosses ?

if classes matter then Battlemage and I go everywhere with an Aran , so we both need to be able to do them and we always stay the same level. so the minimum to do these things decently or efficently is the info I'm looking for. Thank you ~

Scar/Targa: 135+
Zak: 110+
Pap: 120+
DRPQ: Glitched atm (dunno if its doable again)
CWK: 120+ ( you cant clear certain stages on aran/BaM, 5 Adventurer (ea of every job) are requiered)

You can fight Ergoth at 112-115 somewhere, just as long as you can hit him. It is not like he will be dangerous with the nerf in damage that bosses got with Big Bang.

Ergoth is easy if you can handle dispell. I soloed Ergoth at 8x three years ago before all this potential and hammer and good items thing with 100%ed claw and basically clean equips. All it takes is 3.8k hp to survive his damage.

It still has the same requirements. As long as you have a Thief with max Haste & Dark Sight, a Mage with level 1+ Tele, a Mage with level 17+ Tele/Thief with max FJ, and a nub (under level 30), you're fine. For attackers, as long as you're level 110+ with 3k+ Hp (not entirely sure, but most bosses do weaker damage in BB, so 2-3k seems right), you should be fine.