Am I incredibly paranoid with my idea of multiple(>2)-factor-auth like fingerprint+yubikey+password+OTP aso?

Depends on what you are trying to protect. If it is a Switzerland gold vault, then most likely not. :D

If it's your MySpace account... Yeah probably

Depends on your motivation behind the idea of 2+ factor-authentication.
Perhaps you just like overengineering things - not a bad thing either, though. ;)

(Fingerprints are not necessarily a strong factor as they are easy to replicate, but you're probably aware of that.)

Full speed ahead sir. We may all need 9087 factor auth one day.