My Plan ... help wanted!

[Navarchus]

RSM250 is a very good and balanced choice imo.
I do not have personal experience with it, but I have few good friends who use it and are very satisfied.
You have there 6 *39w t5 set up, a skimmer running on hydor pump and hydor water movement pump.
I believe you will have to add some extra flow pump for sps (Tunze 6055 + single will be ideal, if not Koralia are good as well).
You don’t have tap-off system there so you will have to add one (I believe it is one of the most important part for a stable reef)

1. Copperbanded Butterflyfish-not for a newbie
2. Longnose Hawkfish-Will eat small invertebrates (such as shrimps)
3. Pink & Yellow Anthias (really and medium sized pink/yellow fish)-not for a newbie+ too small tank
4. Banggai Cardinal- ok
5. Blue-green puller (Chromis)-ok
6. Clown(s) - typical orange, or black-ok,On pair or small group –s size