Hey @anon81143130, I have yet to grow autos, but I DO use RO 707 mix exclusively! I like it and have used FF Ocean Forest, and just didnt like the excessive bark and woody bits that IMO should be more composted than they are. I have also noticed that FF is a bit hotter than my 707. I actually use a 4 part mix with the 707 being my “light” soil part, (others use BIO BIZZ LITE MIX as their soil part), and then another part PERLITE and then I use worm castings as the 3rd part and I then add the fourth part as COCOGRO from BOTANICARE, I like it cuz its a thoroughly washed coco substrate and it adds more soil structure…
Don’t know if this helps, but the 707 soil is a nice lite mix that MAY offer a less “hot” soil for ur autos!
Good luck!