Its not that bad actually. When new tome gear comes out use this order:

Left side first, if you raid buy later turn gear first. Ex. DW head drops in T12, if you party is still stuck on T11 then buying the tome head is a good purchase. If you are equally farming all turns, then buy BiS pieces first. Body,Legs are the most valuable state wise but cost the most.

Once you left side is capped with current gear then its time for the right side. Focus on STR Slaying accessories first, then purchase VIT if needed. 99% of this game can be tanked in full STR right side. You will also find your previous ilvl VIT accessories to still be useful for the 1% that require them.