Now that its looking like its gonna be Shen gauntlet im reposting my optimal squad line-up/order
1. Julius:Going in there first to absorb as much damage as possible and test his ability against maximum Unga
2. Lolong:High tier all arounder, can probably get a hit or two in/test the waters
3. Rei: Speed check, generally there to begin the process of accumulating small hits/draining stamina (if Shen does have "stamina")
4. Raian: Relying on Ryan to tire him out get him more vulnerable than anyone else with Kure unga/rabid pitbull energy
5. Lihito: Literally just there to try to bleed him with Razor's Edge as much as possible, put him at the halfway point to give him a solid chance to land something while not losing too valuable a slot on only a somewhat capable fighter overall
6. Waka: Unga Bunga 3, 0.1% chance of landing a blast core even if he's abandoned it for "jab" but he has better fighting instincts than Julius so he should be able to land at least one or two heavy attacks by this point
7. Kuroki: Best chance at doing significant damage but still not confident enough in him to anchor him against a not sufficiently injured Shen, if we think of this as a raid boss, Kuroki's the guy who does the highest DPS but fails near the end to ensure the others can cleanup
8. Kaneda: By this point he's hopefully had enough time to analyze something resembling a pattern to Shen's fighting style but he's fully on the defensive/stamina drain tactics to try to squeeze as much information for Agito as possible
9. Agito: Cramming as many principles and wall/razor scaling into this autistic boy as possible, especially after Kaneda, to try to force the highest level of evolution possible
10. Ohma: Ohma

Sideline Support Team: Koga and Kazzy on Fist Eye Analysis Duty, Hanafusa on health evaluation/diagnostic duty, Rino for queen bee sex buff on Lihito, Okubo as team mascot/moral support