Ok I am looking for the best boss load out with the following:

Duke (3 star)
Kate (6 Star)
Alpha (4 star)
Blink (9 star)
Hector (9 star)
Pain (8 star)
Envy (5 star)
Miss Conduct (5 star)
Lucas (star 5)

I ONLY do Bosses. No PVP. Which of these are the best 5? I am willing to star up any these to 9 as I am a full LSI. I also have the following Epics. Which should I keep and fuse all with the purpose of having an optimal boss load out?

Morningstar (3 Star)
Duke (3 Star)
Sin (2 Star)
Anthony
Ace
Orca
Gustavo X2
Sir Benedict
Vigilante X2
Azura
Isis
Irina
Tigress
Vanquish
Diablo
Fiori X2

Thank you in anticipation.