The only major issue I see is that you have not disconnected the 1.8v voltage regulator. There are some trimming tutorials that say you can leave it in, but the bottom line is this: if you have a PMS-2, remove it, and if you have a PMS-lite, keep it. The easiest way I have found to remove it is apply some solder to the five pins, cut them off with a flush cutter, take off all of the pins one by one, then apply a good bit of solder to the other side of the regulator and heat that up while pulling up on the regulator. After that, clean everything off with some isopropyl alcohol. One thing I did notice was that your solder points do not look the greatest, and this could be an issue for when you need to wire to very tiny vias on the wii. Make sure that you have a good temperature controlled soldering iron (not something you got for 20 dollars) or else you will end up damaging components.
Also make sure your batteries are charged.