Pally's have always been limited Casters, personally I would do Phys-Adpt, not Mys-Adpt.
More than enough powers available to them to mimic the minor casting of a Paladin.
Focusing on the traditional Pally Sword and Slaying Demons (Spirits) ..... You could pick up Combat Sense, Agility Boost, Increased Reflexes, Astral Perception, Pain Resistance, Improved Critical, Enhanced Perception, & Magic Sense, Improved Accuracy (Blades) to name a few.
Mentor Spirit of Eagle or Mediator would be solid choices for a "Paladin" type.
I'd probably swap Cash & Human, make him luckier.
Maybe something like this.....
A-Attr
B-Skills
C-Magic-Adept
D-Human
E-Cash