returning to the hobby

Hello gang!

AFter repainting the house this holiday, the wife said we could set back up
one of my tanks (Woot!) I haven't kept marine fish for many years, and I've
been reading a lot (maybe too much, lot of different opinions) Anyhow, I
wanted to describe what I'm thinking and see if there are any compatibility
problems, etc.

Tank is a 20 long. I will be using a Magnum 350 cannister filter and a UV
sterilizer. I will have 20 lbs of aragonite and RO/DI water from my local
fish store, and I'm cycling with ammonium chloride instead of damsels
because of cost, primarily.

Now for what's going in there.
My wife really loves the coral banded shrimp. Since we can't put that in
right away (at least when I was keeping the recommendation was 6 months
established tank before inverts.) I want to leave room for one.

Sorry I don't have scientific names right here at my elbow, I can get them
if needed.
Foxface
couple of Centropyge angels (I'm thinking lemon peel and half-black/coral
beauty)
royal gramma
possible a clown and anemone down the road.

My question(s)
Could I possibly squeeze another small fish in there?
Because of territoriality and keying in on colors, could there be a
foxface/lemon peel territory problem?

In which order would you guys add these fish, as I'm going to add them one
or two at a time?

Thanks in advance. i'm excited about getting back into the hobby!

--
Steve Hollis--You friendly neighborhood Biology Teacher
"Science and Religion are opposed,
but only in the sense that my thumb
and forefinger are opposed,
and between the two, I can grasp anyting."
--Sir William Bragg