Two of the "8 pins" are Vcc and GND - can't be used for anything else.
I included the Vcc and Gnd in the 5 pins, but actually re-configuring the reset pin may work. I can just send some bytes between the two devices and once i'm confident, use my one upload. Hopefully i wont screw up making a light blink in the coding.
reconfigure the RESET pin for input/output
How do you do this?