Thank you for the extra info, I must admit I had come to the same conclusion.

but I have found that I do not have to have the standard telescoping leg assembly that is common.

It is a pity that the SR Suntour Swing only comes in 700C, my next option is the RST Single Shock which comes in 20", 24", 26" and 700C.

Now I took a few more measurements today, from fork crown (gap where fork and head-tube meet) to axle centre is approx 40cm, and the rake is approx 3.5-4cm (not very accurate I know). The thing here is the fork length, depending on the measurements it might actually pay to try and obtain the 24" SS instead of the 26". I need to do some more research (and re-find the official cannodale measurements for the Hooligan frame)