Just a suggestion, 3alarmer. After I did my Gitane TdF stickers, I sealed the edges with one of those sign maker's edge sealing pens.
Used by sign makers, etc., to seal the edges of their vinyl films. Worked great.
I too was worried about the edges lifting eventually. Did my stickers wet, and so far, so good. But the bike doesn't see a lot of use.

Amazon.com: Pro Application Tool - Edge Seal-It Pen: Automotive