I feel like I should have waited till this year to apply for a couple reasons that may or may not apply to you. I've worked full-time for my entire undergrad and my 2 year research project was wrapping up last year so combined with school I really had no time to devote to apps. I honestly think I half-assed it and underestimated the competitive nature of getting in.
With that said, if you have the time and a good app ready to go, I'd say do it. Just get it in early (June) and get those secondaries going. And absolutely make sure you're doing a ton of stuff medically related during your app year just in case you don't get in. You don't want to be delayed 2 more years because you haven't made any changes.