Yeah, not to worry amdkt7...these guys are so good these days, the biggest hassle is having somebody 'rooting' about in your mouth.
I had a root canal under the same conditions you describe around 3-4 months ago. Walk in the park. I was back at work an hour later! Like I said, these guys are good.
And, you are SOOO doing the right thing, getting it handled now, before you end up in a plane w/ a bottle of vodka, and then discovering it..."Houston, we have a (hic) problem..."