With Aerolineas Argentinas, our SOP - (747-200) is "brake temperatures must be in
green band for all 16 brakes before start of takeoff roll". Then - in
any case, RETRACT the gear after lift-off until reaching a safe height above obstacles (so to avoid compounding an engine failure with a gear down configuration) - F/E is checking brake temperatures during initial climb - if necessary, re-extend gear during climb to cool-off the brakes until all brakes indicate green band again...
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Remember also that brake structure temperatures will keep on increasing for some 45 minutes after use of brakes on landing or taxi-out for takeoff... We have that procedure since some 10 years ago.
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As far as MK is concerned, I had a short contract in 2000 to train their initial group of 747 pilots with their first 747, and I remember observing that procedure.
Happy contrails