Not a good idea, I’m afraid.
Not all networks give NITZ at all, and some that do only give it after GPRS attach.
So it’s no better than waiting for GPRS-Attach - but possibly worse!
As I said to you before:
No, that is not a failure at all - that is perfectly normal behaviour!
See: Documentation Unhelpful/Misleading: WIP_BERR_OK_INPROGRESS - #3 by medhat
If you don’t get WIP_BEV_IP_CONNECTED, you should get WIP_BEV_CONN_FAILED