To avoid the thunderstomp you could use a Cold One.
with Glittering Scale and a cold one, you go at a 1+ armor save.
However, there's a limited number of options:
with glittering, you cannot have Armor of Destiny, so no ward save 4+
to have the ward save, you can pick the Talisman, but at that point no re-roll of failed armor saves
To avoid rerolls by the vampire, you need to have "Always strike first"; and this means a Swift sword.
There are also some question marks... will the vampire be aquipped with an Other trickster's Shard? will it have an Ogre blade?
In case of trickster's shard, imo the ward save 4+ loses some of its appeal; in this case, i would go for:
Cold one with glittering scales and swift sword; it means an armor save of 1+, you will be hit at 5+ and no rerolls for to hit.
and you'll have 50 pts for other magic items... dawnstone to re-roll your armor saves (against an ogre blade you would have a rerollable 5+)