Here's my plan:

So above is the SNES controller PCB, I plan to solder and match up each one of the pins from a DB15 port to wherever the SNES button leads lead to. In this case, they lead straight to that black micro chip, right above the Select button. I also might plan to desolder that chip right from the pcb so that soldering will be a little easy. Will this work?
Also, I'm having trouble finding DB15 cables for a reasonable price and shipping cost (in canada at least). Can anyone direct to any websites?