I agree with pragash that you should design with ideal lumped elements first, to see what values you need. Inductance implemented by transmission line is fine for narrow band use at very high frequency, where circular spiral geometry doesn't provide small enough values. But in general, a line is not a replacement for an inductor, because the wideband response is very different.
For your wideband use, I would expect that you need large inductance value -> long line -> behaves like inductance only at low frequency, transmission line behaviour (=distributed LC) at high frequency.