Update....
Just came back from a 180 mile run with youngsterbiker, great day, and my gel pad done the trick :-)
So when I came home, I took off the seat, and proceeded with the next part of project.
After removing all the tape that I used to temporarily fit it, I then removed the edging on the gel pad and was going to cut the foam, but thought I'd just lay it on top for now and staple the cover, in my view it looks good, I'm pleased with the results myself, might take it of and trim the foam at a later point and maybe even try and get some more foam/packing for my seat area, at least now my butt is not sore, don't get me wrong, I still feel a bit if numbness but it doesn't get discomfortable that it annoys me, so I think it's done it's job.
See pics and let me know what you think guys.