Mario,
Give some thought to taking up one of the Martial Arts Classes on offer as an alternative (or supplement) to your regimen.
Roger Walser teaches a pretty intense Bujutsu class in POP, which will burn the fat off you. Oscar Zazo (13 time Spanish national champion, 7 time European Champion, Bronze in the World's, former head instructor of the Dominican National team) teaches Karate in Sosua, and there are Brazilian JuJitsu classes on offer at Golden Park Gym in Sosua.
Any of those three will whip you into shape right quick, especially if combines with a sensible weight training and diet management program.
Best of luck, and congrats on not waiting until New Year's to get cracking!
Joe