If you have seedlings ready to transplant and you haven't mixed up any soil yet, the decision is already made. It's too late to mix up a "hot" soil; it won't have time to cook/compost/mellow before you plant in it. You want a MINIMUM of a few weeks cook time, with 6-8 weeks being much better.
That said, you could still have a very successful grow using a mellower soil along with teas (alfalfa teas, kelp teas, compost teas, guano teas, etc). Then when the grow is done, save that soil and remix it into a "super soil" of some sort.
Better yet, mix up some hot soil now, and it will be ready to
go when your current crop is done.