Hi Kate,
Welcome and congrats on your engagement. Im somewhat new to this also and have decided to have my wedding in Cabo also. These girls have been amazingly helpful from you location down to the nitty gritty favors, anything you need you will find or ask here. I personally did not hire a wedding planner because the hotel I am using already has one, but I would recommend getting one, just because they know what is the best and who to trust. If you look under the cabo you will find tons of info!