Attack Rating (Diablo 2)

All kind time of day.

The question regarding the optimal number of ar for melee-Persian. There is an understanding that this figure is very subjective as the percentage of hitting the target depends on 4 parameters: ar striker, def purpose and lvl the attacker and the goal. But, maybe there's a good common figure ar, within reasonable limits, without affecting other stats?

What is the complexity?
Take the example of a specific case, my frenzy barb:
Skills: bo - 20, 15 - berserk, frenzy, sword mastery, find item(!), 1 in passing and others need.
The gear: lightsabre, lawbringer (the future plan), arreat, lionheart(shaft, wealth), highlord, LoHi (draki), strings, gore, raven and dwarf.
So here's my dilemma - there are 10 skill points, the candidates for the attachment berserk, frenzy, sword mastery.
berserk - damage from magic will be stronger than the possible 25%ED from frenzy or sword mastery (if you spend them), phys immune would be faster to go
frenzy - 15 is sufficient in terms of ias will be 5-frame attack with my gear, but it still gives 25% ED (if slacsite) and +7% ar per skill point
sword mastery - 25%ED if you slacsite and +8% ar (not significantly more)
Where to spread?
The damage is not excessive, but ar now ~7300 and hell travi (pers swinging to farm spoil) 78% hit by consuls, but I want more (according to the Baal in General, 65%).
But again, today I calculated that when I'm 92 LVL to get a 95% hit by the consuls, I have 25K ar inconceivable without damage stats and the cuts..(like really?) So, is it worth it to sacrifice damage if you ar still not be the same as you want..

I should be grateful for the advice and proof.