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Can't see any problem with that, wheelbuilding is a relatively low risk activity
You say that, but bringing spokes which are much too short to full tension might easily lead to a catastrophic nipple failure, and the free part can fly off at surprising speed. Not a problem once you have tape on the rim bed, but on the truing stand with your face in the firing line that could have your eye out.
Can't see any problem with that, wheelbuilding is a relatively low risk activity.
Don't put 'em on a bike though.