[Question][Team] 5x4/Sumire team building

I'm looking to start investing in a team for resist latent farming in 5x4 dungeons. I did a little research and general consensus seems to be that sparkly leads work best. Since I don't have ShivaDra or Yomigon, I think my best bet would be Sumire or A. Ama.

From my box, Sumire would probably be the better option. I don't really play sparkle leads or 5x4 dungeons, so I have a few questions.

• Do I prioritize orb enhances or rows?
• How much utility do I need for 5x4 dungeons? Aka should I bring A. Isis?
• Are orb/double orb changers preferable over board changers?

Any insight would be really helpful. Thanks!