Tenant breaking lease On my Wedding Month!

[Brandon Rodriguez]

My tenant has been late on their rent for the past 5 months, never more than 40 days late, which I believe is still bad. When we called them yesterday to ask where the final "installments" for December '13 were, they mentioned we would have it today - January 3, 2014 (which ended up not being true), and still waiting on January's rent. During that same call, they mentioned that they can longer afford to pay rent and want to move out mid March 2014, their lease expires August 2014.

My issue is this, I am getting married early April in Miami, I Live in Los Angeles, so I will be in Miami from late March to mid April, which leaves no time to find another tenant! As if planning a destination wedding is not hard enough as it is, can I ask the tenants to move out mid February instead? Or will that mean that I am breaking the lease? Also, Im assuming I keep the security deposit for breaking the lease? Thank you in advance for any help!!