So basically you're just using those 7 lines to say that the image file is bigger than 700MB? Did you try to burn it [to a cd-rw], does it fit or not? I've seen somewhere slightly too big size but apparently it was a calculation problem, as it burned to the disc and uset it 100%.
Another option: burn the cd image onto a DVD. Yes, that's possible. If you're on Windows, use a program called
imgburn which will happily do the job without asking stupid questions
Nero will not, I'm afraid. On Linux..I'm not so sure.