CrashDash: I can't speak to your Class I status, though I doubt it will be an issue if the ablation is successful.
However, I can understand your situation, being in exactly the same. Mine were running about 4.5%, and though cardiologists claimed it was insignificant, that's not the case when you lay in bed at night wondering how many beats in a row you'll miss next! It's a very off-putting sensation. Even for me, an MD!
In my case simply taking a beta-blocker drug solved the issue. Cardiology was able to localize exactly where my ectopics were coming from, and he felt it was a tough spot to hit with an ablation procedure. But we had extensive discussion about ablations, and these days the procedure is very successful, and risks extremely low.
So I anticipate you will be just fine afterwards, and expect your AME will just yawn.