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The Stablizers are not that wide, perhaps an extra inch on each side. If your space is that tight, then I think you are going to have other problems.
The cabinets are pretty narrow, but I suspect the same holes that the Stablizers fasten into would fit the Speaker Spikes. That is workable, but you are going to have to be careful about bumping them as the base is going to be a bit narrow.
But at its core, yes, using the spikes instead of stabilizers.