You can set PK3 to supply same voltage as system, so pgd/pgc voltage should be OK. But again, 5 way pin header worked for me many years, so I don't see problem with that.
Recently I had small board with weird shape, and there was no room for 5 pin in row.
So I tried this
http://www.microchip.com/Development...tNO=TC2030-MCP
It is ok.