It's a tough decision, and priority-wise for me it goes: whatever my start is, get a wailord out. either evolving active wailmer or a benched one, while also setting up claydol. next step is nidoqueen. The usefulness of Gatr is to set up Wailord, and while it would still help late game, idk if I have the room to fit it in beacuse of all the healing trainers needed