Not suggesting you do this now, just per example:
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That would leave 5 or 6 branches. That long branch on the left of the main stem, starting below the cut, you could then pinch and bend to keep it down, or hang a weight on it, or go full LST and tie it down. That bottom branch at he right I would, in that scenario, cut off. Not with the idea it's useless or gets no light or whatever, simply to pick a number of bud sites per plant, using the best branches that will end up at a similar height.
An alternative, which I do suggest you do but only if it's taller than the rest, and that's pinching the main stem on the same place where I would top it or one node higher, as in pinch it between your thumb and finger till it softens a little, then bend it 90 degrees. It'll look bad 12-24 hours but they can handle it and recover very nicely. Not the best example cause this plant is stressed but I do it frequently. The pinching before the bending helps prevent the stem from snapping.
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For perhaps a better idea of how plant branches become bud sites check out the mainlining thread. It's a bit too extreme for me but it shows nicely what we're talking about. Controlling the number of colas. UncleBen's topping thread has plenty of examples too.