Welcome to the site!
I think you have a Fluvial 305. I have the older version (304) on mt 55.
I would ditch the CC, I liked it for about 3 months then decided to go with all sand. CC traps a lots of waste and limits your sand sifting critters.
Ditch the underground filter as well, since they are a bit outdated and won't work too well in a SW
1) You won't need the bio wheel filter, since the Fluvial can take care of all your needs.
is a very important piece of your tank's bio-filtration. I like to go with 1.5-2 Lbs per gallon, for proper filtration. LR
also gives you critters a place to stake out, to hide and a safe place to sleep.
3) Nothing good happens fast in SW
. I always choose the humane way of a fishless cycle. I use 1 raw, unseasoned jumbo shrimp per 30G to cycle my tank. It is much cheaper than using a fish, and 100% safe. With a fish or without, it can take 4-6 weeks to properly cycle a tank (don't use any of the "quick cycle" formulas). I find this time frame gives me enough time to decide how I want to stock my tank.
4) Lighting is not as important with FOWLR
tanks, so you should be good there. Nice choice with the pistol shrimp and shrimp goby! Make sure your LR
is placed firmlt on the bottom glass of the tank because the pistol will move sand like you wouldn't believe.
5) Anemone fish, there is no guarantee they will host one. Sometimes they will host a ph, plot of sand or even the corner of your tank. Please do not cycle with a living animal.