Patch 6728000: ORACLE E-BUSINESS SUITE 12.0.6 RELEASE UPDATE PACK (RUP6): We have some questions in

We are applying patch 6728000: ORACLE E-BUSINESS SUITE 12.0.6 RELEASE UPDATE PACK (RUP6) at the suggestion of Oracle Support related to another Service Request.

RUP6 Pre-requisites patches query
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1) we have not applied patch "p6767273_R12.AD.A_R12_HPUX-IA64" because we are not having any One-off Product on our instance. Is it correct ?

2) Before applying patch 7305220, we have run adgrant.sql as db user "orauser" from dbtier,
Please tell below parameter is correct or i have pass APPS as parameter ?
sql> adgrants.sql APPLSYS

RUP6 Post patches query
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As per the documents id 743368.1 following 4 patches need to be applied.

1) Patch 7649893 is superseded by