/run AcceptQuest();
/run AcceptTrade();
/run RetrieveCorpse();
/run RepopMe();
/run ConfirmAcceptQuest();
/run AcceptResurrect();
/run StaticPopup_Hide("QUEST_ACCEPT");
/run ConfirmReadyCheck(1);
/script AcceptBattlefieldPort(1, 1)


Sumthing like this?
Edit; if u only need inv for bg just use /script AcceptBattlefieldPort(1, 1)
But i guess u know