After hours of studing and testing I cam to this conclusion that works for me:
Start Pump---on
Battery ---on
Apu Master set to run 10 sec
Then Apu Master sart hold for 3 sec
--100% set Apu Air --on
Apu start and Ext power to--o
Left and Right Gen to---on
L and R Bleed to --on
Fuel pumps on
Open Fuel window on piedestal and start right engine
when 20% activate Fuel Cut off
Isolation switch to --on
Start r
left engine same procedur
L and R bleed to auto
L packs on