I want items that cast minor protective spells x/day or something. Blur, Mirror Image, etc. What does Pathfinder say about permanent effects, like items with PfE, does this add a lot to the cost?
Since it looks like we're voting to do this investigation for him, would he be willing to exert some mild pressure to help us get fast/better access to magical items straight away?
It really does depend on what you want, some magical items would be so rare that him asking about them would be remarkable and thus draw attention to the investigation, but as long as you are looking for thigs with a CL below 6 and with no extraordinary requierments beyond that the governor can help you out.
Mind blank is out of his league. That thing has a CL of 17.