Check very carefully around the canister for chewed wires. The could explain the FTP sensor codes.

The lean codes might not be related. For those I’d pull the MAF sensor and clean it well. Look for a bug wing or similar.

Do you have the ability to check fuel trims?

 

Totally missed the part where you just fueled it. Crappy fuel won’t cause the P1454 but it sure could cause the lean codes

 

Typically you have to hold down the gas pedal when the engine is flooded, and that sounds like what is happening on your start after fueling. Holding the pedal down when cranking actually cuts off the fuel and opens the throttle plate for air to quickly solve the over-rich condition. If nothing is wrong with the injectors, etc., the engine will then run normally.
From now on, let the gas nozzle cut off automatically and don't put in any more fuel - you can't 'top-off' today's cars without possibly fouling the EVAP system with raw fuel, which can cause flooding. This might help the flooding after fueling but may or may not be related to some of the codes. Your EVAP system will have to be checked out. Rodents will gnaw on the rubber hoses in the fuel tank area on vehicles where they can get to them. If your canister is contaminated with raw fuel, it will quickly dry up in use and should be okay.

 

When you say you replaced the Vapor Canister Purge Valve, you're referring to the purge valve on top of the engine, correct? This valve is normally closed and the computer opens it (duty cycles it actually) when it wants to burn the vapors in the charcoal canister. If this valve sticks open then when you fuel you'll get all kinds of fuel vapors in the intake manifold during fueling and the car will will be hard to start and act like it's flooded (it is flooded.) You can easily test this valve by removing it and seeing if you can blow through it. It should be air tight when off.