I used to fly the 580 out of DEN to BIL. Ours had a MTOW of 54600lbs as we did not have fuel dump. We could get out of DEN on a 90 degree day at MTOW. If anyone was more specific numbers I can get out my old manuals and look it up. I dont think getting out of Subic rwy 07 would be much of an issue with a turn procedure at MTOW.