SeaSerpants Dual Hills 20g ONE MONTH!!!

[SeaSerpant]

Hello Everybody!

I have been apart of this forum for almost 2 years now! And i've never even had a SW tank. After finding out how expensive this hobby is i went FW and already i know SW is the best! I had talked before about getting a 20g and now i have!

Specs:
24x12x17
Rounded Front corners
Black Back

Equipment:
K-2 Viper (metal halide) with 10k bulb (will change to 14k)
Penguin 330 Biowheel Filter
Hydor 100w heater
Koralia nano powerhead

Bio-sea Marinemix salt
15lbs Live Rock
20lbs Argonite sand

Corals:
None
Want:
Zoas
Pulsing Xenia
Frogspawn
Feather Dusters
(any ideas for nice colourful corals? preferably soft)

Fish/cuc:
None
Want (will change):
2 clownfish (female, male)
RedFire Fish
Longnosed Hawkfish
Magenta Dottyback
Lawnmower Blenny
CUC
Possibly a pygmy seahorse


I just set this tank up yesterday and it's looking good. The filter almost has all the sand out of the water column and everything is looking good. Now before the pictures i have a spur of questions:

When can i tell when the nitrogen cycle has started/finished?
Will the metal halide be good enough for corals?
How many fish can i have? Corals?
What kind of CUC is the best at cleaning? best looking?
Is there any kind of anemone that won't kill other corals?
Does my tank look good?
Any Advice?

And here are the pics:






I'm thinking about switching the sides of the light around with the filter!
Comments Please!
Thanks
SeaSerpant

PS, Just bump the thread for me to update/reply or i might forget!