Piano Forum

If you can play the pieces you've listed you should be able to judge whether you're prepared for it or not. Don't worry I'm not projecting. I just find it fascinating that a sufficiently advanced player can't properly analyze what he/she needs for a piece, and the sort of difficulties said piece requires. Or at least have the agency to at least read the score and see if you can do it. If you're that poor in analysis and self-reflection, why not ask your teacher? Probably lying about your repertoire list, like most users that seek validation online tend to do. 

Like look at the range of pieces you've selected: from the op. 69 waltzes to op. 47 and op. 10 etudes. Who on earth lists the op. 69 waltzes when discussing whether or not he's ready for the Barcarolle? And only Chopin pieces as well. A player of your level should have a much more diverse repertoire by now.

You're either an amateur and already learning the pieces you've listed terribly, so you shouldn't have any qualms about learning the Barcarolle badly; or you're lying about your repertoire. I don't know why people (including me) give these sort of posts the time of day, it's clearly bogus.

Also getting the manuscript, sitting down, and trying it out on the piano to see if you can do it or not isn't performing it badly...it's just trying it out. This is how actual piano players (at least the ones with agency) function in real life. Try doing it sometime, and maybe you'll stop having to ask strangers online about your ability to tackle a piece.