As someone who applied with only 2 years' experience, and retried it again this year (with 3 years), I would say get at least 3 years' worth of experience under your belt before making the leap. Although it's not impossible to gain admission (I got admission to a Top 20 last year with less experience, but decided not to go) you're definitely going to be behind the competition unless you REALLY have impressive work experience (for example launching a start-up) and/or a monster GMAT/GPA. Most MBA applicants have 3-5 years' experience; it's important to have a track record of some sort so you can have something to contribute to class discussions, etc.
If you want me to go in-depth more about how it is to apply w/ less work experience, I'd be glad to help you out, feel free to reach out to me thru PM.
Edit- just read through your posts thoroughly...there are some schools that are more "early-career" friendly than others. I can help you out through PM on those if you want