A few gestalt principles applied here:
Watch your saves. The GM is unlikely to take it easy on you, so your melee brute with a poor will save & -2 from crossblooded (+2 total before ability scores/items at L11) could be a liability to the party when the vampires attack unless you do something - a trait or feat to add Cha to some will saves & protection from evil as a known spell perhaps.
Survive in close combat. Medium or light armor, huge size and few defensive spells could lead to your taking a lot of hits. The protector familiar trick might help, and make sure you have a couple of wands for out of combat HP recovery.
Have something unique to do out of combat. Probably most people in the party have at least bard or better spellcasting, you can't compete there unless you change the build to at least one different class, but maybe you're a great face character, or you have some odd magic items/skills which spells can't easily duplicate.
Also note neither of those prestige classes advances spellcasting at L1. Not that bloodrager spellcasting is all that, but you're one level behind on it for what that matters.
Eldritch knight is kind of a waste. It really doesn't bring much to the table.
consider Sentinel, Evangelist, Mortal usher, or student of war instead.