My tech experience tells me flashing to new ROM (CC20, then Wozzer's 6.5) is best to do before adding anything else to the new phone -- just flash the phone new and pristine as soon as it gets home from the Verizon store. That's what I'd do with a new PC, for example.
Are there any reasons to install something else or do any config stuff BEFORE flashing the brand new phone? I assume no, but I don't want to miss something important. Thanks!