I also a 56cm Raleigh M Trax100 Steel frame, the raliegh is dead tempting to build, I bet it's a hoot as it's fairly compact and sporty, though is a tad too small for me really and doesnt take mudguards or fat tyres... still dunno whether to sell this or build a summer road basher! :-S
I had no idea about road bike geometry when I built my Raleigh, I just spotted the fact that it was in Reynolds 853, and that was that.
I found it pretty twitchy and harsh to start with, but the more I ride it, the more I appreciate just what a good ride it is. It's still a hard ride, compared to any mtb, but I'm really appreciating the sharp cornering ability and the fact that what little power I can push through the pedals, makes it onto the road in the most direct manner possible.
Go on, you know you want to.
"Try not to punch any clowns"