This is my lineup for the plot Maiden's Genjetsu.
Main: Fire (Scarlet Blaze lvl.40)
Naruto (2stars, lvl.40)
Sasuke (2stars, lvl.40)
Haku (2stars, lvl.40)
If you would asked how I fought the 2 Hokages:
I allowed the First Hokage to use his ninjutsu first before I used Haku's to take the lead, then just play the way you play it.
This worked for me pretty well and I hope this would help you guys; if it worked for me, it would "probably" work for you.
Ganbatte!