I agree with everything that's been said above.
Please make the Ward in line with its PHB counterpart.
It should stack with THP, should work with Armor of Agathys and have the proper ward size in order to functionally protect the wizard.
Also I hope you'll add the shield and absorb elements spells, as these are staple to use as an abjurer.
As Skallewag suggests, setting mage armor until next long rest is functionally closer to pnp.
