Need Feat suggestions for Undead Necromancer

[Legna123]

Hey all

My charakter is a lvl 9 LE Changeling Graveknight Sorcerer
A lot of Stuff has happened in the Campaign before, including a rather long Hiatus.
However we have now restarted, played a couple of sessions and finally Leveled up, and now is the time for a feat, which leaves me wondering just what to pick.

Therefore I come to you, asking suggestions
Stats and stuff is in the Spoiler

Sariss:

Str: 20, Dex 16, Int 14, Wis 11, Cha 31
Current Feats, not Including Graveknight Bonus feats are:
Eschew Materials (Sorceror bonus feat)
Spell Focus: Necromancy
Varisian Tattoo: Necromancy
Craft Wondrous Item
Spell Focus: Evocation(Bloodline Bonus feat)
False Focus

Other relevant information, at lvl 10 we will gain 1 mythic tier, and may advance in tiers depending on story and actions Mythic Suggestions would also be Welcome.

Other partymembers are:
Vampire Mesmerist/Enchanting Courtesan (Enchantment and Poison focus)
Vampire Rogue (Two-weapon fighting blender build is what I was told, Owner has not been present in a combat session yet)
Half Balor Rageshifter (frontliner/dps)
Half Balor Arcanist (Conjuration and crafting, generalist Spellcaster, planing to use Planar Binding later)
Half Red Dragon Warpriest (Tank)
Me Graveknight Sorceror (Necromancer with some blasting on the side)

The Setting is homebrewed by the GM, general theme of the current campaign arc are exploration of a large lightly settled chain of Islands, light Intrige when in town and dealing with all manner of wildlife and monsters while exploring.

[Zarius]

Well, to start with, if you're allowed to use third party feats, I might talk to your GM about retraining that False focus out for Signature Focus, since it does the same basic thing but better.

Again, third party, but there's also Augment Dead to make your necromancer's undead stronger.

There's also always the old stand by Undead Master to get more corpses for your buck.