Stick to catchy songs or songs you really like. It's more fun to play and morefun to listen to. Me, I try to remember "so what trick/writing technique did they use for this song?"

And you don't have to remember every note, just remember what each passage does. Scar Tissue is a perfect example; Frusciante is always changing what licks he does at the end of the verse phrases, so you just need to know where on the fretboard he is and what key is being played. For the chorus chords, starts on F major to fifth (C major) to relative minor (D minor) and bam, there's a great song remembered.

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Talking about wireless pedals...