The only things to remember when using a composted manure with nice low numbers like that are:
-It holds a lot of water. Plenty of perlite is necessary to help this. Try mixing 25% perlite in a hot, dry grow room, up to 40% perlite if your conditions are colder or more humid. You can match lightness to transpiration rates so that your watering schedule stays pretty even.
-It's not appropriate for very young plants or clones that have JUST rooted. Use a 'seedling starting mix' for those, or even ProMix BX, in very small containers, because you WANT to have to transplant within only a couple weeks.

It's not super duper rich, the way a chemically-ferted soil is, but it's rich in other, better ways- like the organic acids that plants LOVE. You will want to start off with a lower fert dose as with any pre-fertilized soil, and work up. But with all that perlite you have added, all you need to do is make sure that every once in a while you give a nice heavy watering with plain water and let some run out the bottom, carrying any undesirable leftovers with it. Just like any other medium.
Enjoy.