I don't think he is "equipped" to bat here. Too early, too soon. And he is our best batsman next to McCullum, and McCullum is already throwing his wicket away opening for us (rather than bat lower down).
Maybe when we have solidity in the middle (we don't even have that at the moment), then move Taylor up. At this stage, you need to balance the lineup with nice key batsmen spread. To avoid losing wickets in clumps.
Doing this in formula:
J How
McCullum (KEY)
somebody expendable (Greg Hay
)
Taylor (KEY)
Flynn
Oram (KEY)
somebody (Fulton probably)
Vettori (KEY)
.....
etc etc etc...