Seven days probably won't make it unless that thing motors at 14 knots. You are going to be motoring against the Gulf Stream and current the whole way, probably against the wind vast majority of the way. Miserable trip at best, better get paid well.
Make sure your fuel tank is clean and carry lots of extra fuel filters, on a tight schedule there won't be much or any sailing that direction.
I would do the trip in legs, Daytona to Key West, Key West to Isla Mujeres, Isla Mujeres to Roatan.