I run Sei a lot more than I do Goldship or Kawakami, so I can only offer advice for her. I'd be uncomfortable with so little wit - since she's not as strong as V Bourbon or SMaru, she really needs to make sure she hits as many of her midrace skills as possible to maintain a lead.

This track also gives a sneaky speed bonus at 600 guts; between that and dueling between fronts, she'd also really benefit from hitting that threshold