Hi .bubbles
You should rethink the "suncoral" and eventually get another dendro or maybe some photosynthetic gorgonians. Suncorals are notoriously hard to keep alive long term compared to Dendros because each head needs to be individually fed. Suncorals also tend to open up at night or when detecting food. My dendros are open 80+% of the time, in contrast.
Acans also tend to be lower light corals, so placement high up on the rockwork may not be ideal.
Since this is a LPS-heavy system, 2 of the RW20s should be plenty of flow. My main display (165g) only has a WP60 and a WP25. Not enough for an SPS tank but just right for an LPS system.
Love the 3-D models. I never really go that far. I usually aquascape free style and go from there.
Glad to see you are both so into this addiction. My wife would probably divorce me before giving up her car to fund my next tank. Seriously.
Cheers,
Anthony