If you do it, you will certainly not be sure of the outcome. The company may say "we changed our mind" or "unfortunatly you were not successful throughout the course" or bla bla bla.
One other thing, people with a lot of hours donīt like it when other collegues and "brothers" pay themeselves a job with their lended money instead of eraning the job as they did with the hours talking for them selves...
But good luck anyway!