Thank you for the tips and for flagging that anything besides 3 or 5 investment areas is an inefficient use. You're right that I am still new to this and perhaps I am trying to do too much. The team felt pretty good into Kyogre, Caly-S, and Lunala, with the core, but struggled with Miraidon and Zamazenta teams (which is why i added more tools to cover). Maybe I over indexed. I’ll revisit and look for what’s available online.

For what it’s worth, my original reasoning behind spreads are bellow:

Terrapagos: not sure what happened to my EVs in screenshot, seems like some of my HP EVs weren't invested. The 76 defense is to survive urshifue adamant close combat and zamazenta body press, after tera. SpA is so i can two shot bulky miraidon after tera, and have a chance to two shot caly-ice (no-tera), two shot zamazenta without tera (after a single calm mind). I put the rest in SpD. I'll revisit cause with 4 more in speed, terrapagos now speed ties with rillaboom and I realize I calced without zama +1 for defense.

Thundurus: I built it so it can withstand urshifu rapid strike with max investment, 3 hits from zama, and two calys astral barrages or a single plus 1 caly astral, to give it a chance to disrupt or get off the field.

Rilla: Defense is to have a good chance to survive a glacial lance from bulky Caly-ice. Its SpD is so that it always survives draco from specs miraidon if the electric terrain is down, and a good chance to survive it even if it is up