"Is that too much fertilizer?"

It depends on how much you mixed in. ;o)

"I also have some Maxicrop 5-1-1 fish emulsion -- should I use that?"

You can if you want. Remember - the KEY to good fertilizing practices is to provide nutrients in a concentration low enough to be sure the plant can easily absorb water and the nutrients dissolved in it, but just high enough to prevent deficiencies. There are ratios (of one nutrient to another) to be considered as well, but that's enough info for now. ;o) The fish emulsion and other organic-based fertilizers depend on micro-organisms to break them down into elemental forms the plant can use, so they don't work well when soil temperatures are low, or there are other cultural conditions at work that either suppress the activity level or population numbers of these organisms. You might apply 3 applications of FE to your containers during a cold spell, and since the organic-based fertilizers have a greater tendency to 'carry over', the N from all 3 applications could become available on the first warm day; so you need to be careful with organic fertilizers - just as you do with chemical fertilizers.

IF the product you are referring to is actually ALL PB fines, then skip the screening. I use partially composted fines for the 5:1:1 mix and very rarely screen it, unless it's for a very unusual soil. I DO use uncomposted bark in the gritty mix, though, and I WOULD screen that.

Al