So far no news about 4070 ITX. Probably they will play the wait & see games for a while.
I'm a bit pessimistic it can pull less than 150 watt though. It would probably be easier to reach number that with the 4060Ti, which by default runs at 165 watt.
Edit: that said I'm not an expert overclocker, so yeah maybe it's possible
Edit2: Why specifically MSI btw?
MSI had some great cards like the gtx 1070 aero. The last 3060ti aero wasnt that good i hear.
IT Just needs the proper tdp setting in the bios. Check out the tech yes city video, it has timestamps.