148 is perfect.

How do you explain the tempo of the video I linked to, then? I don't think many people would say it was so wildly wrong.

The dotted/triplet rhythm (when present, which it isn't always) is irrelevant to the metronome setting, it's not as if you write the thing in 12/8 and set your metronome to tick at every quaver. You want a tick at the start and middle of each bar. Which for most people would mean a metronome setting in the low 90s, a little bit faster than how Brian does it.