You have somewhat of a plan in place. I can give you all kinds of opinions, but it will be just that - opinions. All the stuff you listed will work fine.

I bought an octopus sss1000 to run on my new tank. I have always been pleased with their products.
If you run the closed loop do you think you will still need circulation pumps?
There are way too many choices for lighting now a days. I am going to run all led this go around.