1)While it won't help your GS, getting cheap enchants will help your viability. You can cover chest and boots with Hvy Borean Leather armor kits (18STA) for very little money.
2)Also, using Epic quality gems (30 STA), while not exactly cheap can boost your current gear by 48 STA. More if you replace that 16 Parry in your shoulders with a purple of some sort (STA/DEF, STA/Dodge, or STA/Parry). Worst case, use Triumphs or Honor to buy gems.
3)Frost Cloak and Belt.
4)A better neck can be had from the end of hHoR
Pretty much anything else is going to have to come from Raid Drops or spending lots of money on the high end crafted stuff.
Pretty much was said above. The frost emblem trink was a dubious choice for frost emblems... cloak and belt are better picks, as there are easily obtainable tanking trinks around, and belts and cloaks are tricker.