your idea is too complicated.
I have already paid electricity bills with bitcoin that I have, I only check bills and pay using bitcoin to my electricity bill address, after confirming 1 block, my electricity bill payment transaction was successful.
Bitcoin payment method is very good option if it is accepted as a method where you pay your bills. Not only for paying bills it is very successful for other payments also. People share their multiple experiences of its usage getting wide with the time. As a man from California said, I paid my peanut packet bill by using Bitcoin and from the other shop I paid my coffee bill by using this as a method of payment.