+1 Briz. Even .25 ammonia will kill your shrimp. I have never quarantined (spel?) my shrimp or other inverts.
If I were to do it all over again, I would wait until my tank has been cycled and stable for a couple of months. This works for you because you'd then be shipping them in cooler weather.
You'll need lots of moss; mine even hang out in the moss that floats and eat the biofilm.
Don't know what shrimp you're getting, but Neos are more forgiving than Caridina in that Neos have a wider range of acceptable parameters. Also with so many predators in the tank, you may not see Neos (Red Cherry, Blue Velvet, Blue Pearl, etc.) or Caridina (Crystal Red, etc.) much. (I know you know the difference but for those who don't I added the names.)
Amanos would do a great job of cleaning the algae and are bigger so might do better with a sorority. I've always had a higher mortality rate with pet shop Ghost/Glass shrimp but I think that's because of their treatment from the beginning.