Upto you mate. The cob will give you a bigger plant faster. If you get everything right.Should I switch back to the led blurple new phlizon 600 watt (only 100 true draw)
The blurple will maybe be a few days behind by the 2 week point but there's a lot more room for error.
They don't need or want much for the first 2 weeks so most of us find it easier to just let them chill out and go at their own pace under something low powered.