im debating if i should purchase a full inquisitor set for my zerk pure?
im about to start training my attack / strength (currently 60 atk/94 str)

if you aint poor then why not

First, why ruin a 60 ATK Zerker?? unless you plan to PVM then go 75 ATK yes otherwise dont waste CMB's lvls for no reason on 15 attack levels is your account already full quested?

Second, how do you plan to train STR? Slayer? NMZ? Ammonite crabs etc? this will determine the gear you will need.

i want to be able to use all the 75+ attack weapons
right now im grinding nmz to achieve my 99 range im only 500k away.

what is the best armour for melee training??
i plan on getting everything done through NMZ

are you pking? or playing pvm?

if you are pkling, stay 60 attack, way better bracket in pvp. claws>gmaul is a very scary combo. if you are planning on pvm the only reason you should be in NMZ is to imbue rings and thats that. everything else should be done via slayer/grinds

for NMZ you want the most prayer you can get. Zerker helm, prossy top/bottom spiked manicales, barows gloves, b ring (i), torture, blessing, rune def and d scim (at 70 switch to whip till 75) this should only be done if making a PK account otherwise nmz is slow and useless as hell