LOL Don't do that. Tube amplifiers shouldn't be left on for more than 8 (+/-) hours. With solid state, you can have it playing all the time.
With your equipment, I would play it with about 6 hours, or below the max limit suggested for your amp. Let your amp cool down and then listen to it after a break when the tubes have cooled down.
Even with solid state amps, I never really played for more than 10 hours straight. HE-500 drivers are supposed to be good at removing heat but I just didn't bother messing with them too much. 10 hours was the max for me with an hour or two of breaks.
+1 i agree...use a simple cheap ss amp to burn it in continiously..i did it with my trustful matrix mstage...a week nonstop in a not used room..