Reply to MIDI Fighter resistors? + faders?

I've had a MIDI-fighter mod project on hold for a while but I'm hoping to get on it in the next few weeks. Reading through the stuff here, it seems that to add faders or other controls, I will have to use resistors. But there's a comment here http://www.djranking s.com/community /sho...light=resistor that there are already resistors on the board that just have to be enabled in the firmware. Is there a new firmware that supports them yet or should I plan to add resistors myself? I'm a rank amateur when it comes to electronic projects; took some classes decades ago but I haven't held a soldering iron since...

Also, I plan to add some kind of scratch fader to the kit. I was planning to use an Innofader but I decided to hold off on spending that kind of money for now in case I screw everything up. I found the Infinium optical faders from Behringer for less than half the price. Is that the cheapest scratch fader I can find, and will that work in a midifighter mod?

Finally, I'm hoping to make this wireless. Anyone have suggestions on a wireless USB adapter that could easily be plugged into the modified midifighter? Not sure where to start on this.

Thanks!