It's not practical in the bustling work-environment wherein on must work for pushes lasting well over twenty minutes. Clearly, a longer-acting drug would be TCR here. Or perhaps stacking coke with multiple forms of amphetamine.
Would the methydioxy-isomer make working too... umm... something for him? I would personally go with straight meth, EFA's, 3 gallons of dew and coffee with winny at 20mg ED for appetite stimulation. And two grams of test a week, simply 'cause he's asking on this board.
GL, you... err, your friend might need a heart transplant in a couple years with this cycle here, but he'll definitely have lotsa energy 'till then.