Yes i thank you will wont the skimmer. you can get along with out the skimmer
if you do water changes regaler and often

You Riley don't need the whisper although Thea can be good to polisher
the water time to time

The light may be good depending on whit you wont to keep
if just fish the light is just for you the fish wont mind as long
as you give them a day/night routine