66g AIO reef tank - Livestock question

[John M]

My tank ( 32" x 24" x 20") is finally cycled and want to add fish/inverts 1st, then corals. Obviously no more than 2 fish/month and CUC when needed depending on amount of algae. One of pix shows Kessil AP700 light and Mesh lid by Top Lids.
Also OT tank is cycled & ready to go ( IM Nuvo Fusion 20g) ( should be 3rd pic). For DT rockwork is glued together sitting on egg crate in approx. 2.5"-3" live sand. Will add 2 Maxspect XF230 gyre pumps on ea. side once i introduce corals later on. Here is list of fish I would like to add over period of several months and a 4 week QT. Royal gramma , Tail spot Blenny, 2-Banggai Cardinalfish ( captive bred), 2- Ocellaris Clownfish ( captive bred), Purple Firefish, Rainford's goby - MY Question is recommendations of what fish to add first and last?
INVERTS: eventually would like to add : Trochus snails ( up to 6); Cerith (up to 6) ; Nassarius ( 3 to 4)
Fighting Conch- ? ; Blue Tuxedo Urchin ; Blood Red Fire Shrimp & 2 Scarlet cleaner shrimp.
* 1st & 2nd pic 66g with Kessil AP700 light & lid from Top Lids; 3rd pic is 20g QT - IM Nuvo fusion. TIA