Your build link is completely blank. By "Pools" do you mean your main power sets? In which case katana/SR is a wide spectrum. By "Pools" do you mean the Power Pools? In which case your build link is completely blank and you have not, in fact, "listed what Pools [you] want".
What do you want your character to do?
Do you have access to the Invention system?
How much influence do you want to spend?
Are you willing to spend real money?
Etc. etc. etc.