GI and DB home PSU application

Hi All,

I need your help , we are having 11.2.0.3 two node rac both GI and DB home are on same 11.2.0.3 , we planned to apply latest PSU(11.2.0.3.15) on both GI and DB homes.

but we are facing time constraint , we are not geting much maintanain window. so i need your guidence , how i can do this . below are things that i m just thinking.

1- apply PSU on GI and DB Home only on one Node and keep this until next maintanence window may be after a week then apply same PSU to other nodes to GI and DB homes.

or