The "Problem" on freelancer is that you need to hire someone and so you are doing a fake project, thats against the TOS, and if your funds are carded ones (i not say you do so) freelancer will take the money back from all the accounts you have send the money to.
Just wait the 15 days so in the future you can make more jobs
*edit*
Plus you will need to create milestones and release them so who guarantee you really relase them or if you release them that you will get your coins?!