Well, don't wait too long!! Most dioceses have a 3-4 year preparation program. Lots of weekends, and your wife will be asked to attend several weekends with you.
Keep us informed of your journey so we can pray for you along the way.
At the moment our diocease, The Diocease of La Crosse, has a 5 year program.
When my husband converted in the mid-90s in California, it took less than a year. I think it's the same here in Arizona, so it depends on the diocese, I guess. Plus, he was already a Christian so he wasn't "starting from scratch," so to speak.