23? are you sure?
Usually spoke patterns are divisible by four, or at least two.
In any case low spoke wheels are fine for racing and sport riding, but IMO not for heavy duty purposes such as loaded touring. The total strength of a wheel is roughly proportional to the total cross section of all the spokes, so more or heavier spokes (or both) will build you a wheel more suited to your needs.
I've done lots of loaded touring on with 36 spoke wheels built with 14/16g double butted spokes, and never had a problem. Now I'm riding 32h wheels build similarly also without problems, but I wouldn't go less than that.
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