Purchasing the following scrolls.
Overland Flight (5th) - 1125gp
Wall of Force (5th) - 1125gp
Greater Invisibility (4th) - 700
Arcane Sight (3rd) - 375
Dispel Magic (3rd) 375
Resist Energy (2nd) - 150gp
Total = 3850gp
Also change default spell loadout as follows:
Disintegrate -> True Seeing
Cone of Cold -> Sending