you say you need time to get right with God. it doesnt take much time. all you have to do is accept Jesus, and believe that he died for you. believe that he took your sins upon himself and took the punishment for your sins, so that you wouldnt have to face the consequences yourself. he loves you, and hes waiting for you to accept his hand.
i dont have cancer, but my best friends mum died from cancer a few years ago. i will pray for you, but dont give up. you dont know if you will die. but then again none of us do. i might die tomorrow, or tonight even. we cant rely on time to get right with God. we need to do it now, and live our lives like every day is our last day on earth.
hope this helps

im happy to talk, if you'd like to email me.
God bless!