I am not sure why you thought that he is going to repay this. Not only is it a bad idea to transfer debt from one entity to another (as Vod mentioned above), but his reputation is not worth the amount of the loan, and you allowed him to receive payment from his signature campaign prior to the loan becoming due causing him to have the ability to extract money from his signature campaign prior to the likely negative trust he will receive when he does not repay you

Dear Watoshi,
Thanks a lot, man... I am seriously glad and speechless... I will be highly obliged, grateful and indebted to you till the last breath of my life man... I am gonna clear all my bills today and will repay you as soon as I get my payment... Also, just for you, I will again ask my sig camp's manager to pay me some in advance for me to have them secured and included on the other hand for you, with the fiat which will be used by me through my earnings to buy the remaining BTC...   I am speechless, really... Thanks a lot again...

  I can't say it in words, but feeling great and crying with tears of joy... Thanks a lot dear...