I think that you can not invest the money that you are not ready to lose, it's just stupid and irresponsible! But this is your decision. So you must make every effort to not lose this money!
Well investing in bitcoin is one of the best way to do to make a huge income, so i think it is a good decision that you invested your money for bitcoin, and i am sure that when the price of bitcoin will grow you can really pay you shool fees.