Will this soil be too hot to grow my bud in?

Its a high quality soil that runs hot. Most high quality soils do. I used it back in the day before I got into TLO soils and making my own stuff. If you have access to that, get it. You can amend it with some coco (5-10%), regular potting soil (10-15%), or things like perlite for aeration. It does contain some bark product fwiw. So - not too hot on its own, but if you use a feeding program on top it will be overkill. I suggest having CalMag on hand and ready, and know that soil has everything in it to get a plant thru veg and into flower. You may need some PK boosters in flower with that auto. Good luck.