Okay, before anyone yells at me, this is just theory. The idea is that you can focus on building up Gallade and Octillery and then simply rely on Mallow or Gallade in combination with Octillery to get the things you need. This could be absolutely terrible, I don't know, and I don't have all the Leles to test it, so I won't know. Anyways, here's the list:
Pokemon (20):
4x Gallade
3x Kirlia
4x Ralts
2x Octillery
2x Remoraid
3x Tapu Lele GX
2x Alolan Vulpix
Trainers (36):
4x Mallow
4x N
1x Lysandre
1x Professor Kukui
2x Brigette
4x VS Seeker
1x Timer Ball
1x Level Ball
4x Ultra Ball
3x Rare Candy
2x Special Charge
1x Rescue Stretcher
3x Field Blower
2x Float Stone
3x Choice Band
Energy (4):
4x Double Colorless Energy
Let me know if you guys think this could work or if you think I lost my marbles
Pokemon (20):
4x Gallade
3x Kirlia
4x Ralts
2x Octillery
2x Remoraid
3x Tapu Lele GX
2x Alolan Vulpix
Trainers (36):
4x Mallow
4x N
1x Lysandre
1x Professor Kukui
2x Brigette
4x VS Seeker
1x Timer Ball
1x Level Ball
4x Ultra Ball
3x Rare Candy
2x Special Charge
1x Rescue Stretcher
3x Field Blower
2x Float Stone
3x Choice Band
Energy (4):
4x Double Colorless Energy
Let me know if you guys think this could work or if you think I lost my marbles