Not sure what is added from items for your Iron Golem, so I am going to Dig a Hole here:
Bramble: Thorns Aura ... not sure, does Iron Golem gain: 50% FHR, +300 Def, Resists & +5% Max Cold res and the +13 Life per kill mods?
Doom: ? Holy Freeze Aura to slow monsters?
I wouldn't use HoJ, just because there are too many Fire Immunes in Hell Difficulty
I don't know... up to you really ... I thought of Doom because of slowing down 97% of all monsters, if you are using Amp and not a Reapers Toll merc with Decrepify ... it could be handy.:
I just used Arreat Summit to view some Runewords, you should find better information though... here is the Link:
https://classic.battle.net/diablo2exp/items/runewords-110.shtmlGL / HF