John Innes soil...

Would like to get some views on JI,

http://www.johninnes.info/about.htm

For my next run of auto's i am using 70% potting soil and 30% john innes no. 2, added worm humus, fish, blood and bone meal, perlite and epsom salts.
Does this look like it could work well to you or is there anything else you would add?

I was using Homebase brand compost and I was pretty sure it was burning my 3 week old plant. So transplanted to a 30% perlite and 70% John Innes #2 mix. Hopefully it will stop my curling leaves.
Ive heard you can go John Innes no. 2 with perlite from seed all to harvest. I think you should be fine