General

What to cube and cubes

There is 2x miracle time at 5-7pm est so I want to get cubes. These are the stuff I want to cube
3l epic loveless katara
3l epic nova cape
3l unique nova shoes
3l unique 30%boss emp dag.

I wanted to get my cape and katara to unique then cube for good stat, then use leftover for my dag to be legendary
But, I was wondering whether I should get miracle cubes or super miracle cubes to get me cape and katara to unique. I will only use miracle cubes on the shoes,cape, katara when it becomes legendary. And idk if I should cube the 30%boss away from my dag, to hopefully get legendary. So main problem is, does scuba have more chance of getting a epic item to unique? And The cost does matter cause it's 700nx more each one.

PLEASE help, and thanks