Look — I'm not gonna say it's wrong, but having four overdrives in a row might be overkill, especially with a Boss Katana that already has pretty decent drive tones. If you’re stacking the Ibanez TS9, KTR, and Fulltone OCD, you might be drowning out the nuances of each pedal. I’d suggest picking your favorite two overdrives and removing the other two to let your sound breathe a little. Just a thought, but it could really clean up your tone.