There's Clydes , and then there are "Super Clydes" -- i think the Super Clyde territory starts at about 3 bills ---

I think an aluminum frame (is yours full aluminum, or the model with the carbon stays?) would serve anybody in regular Clyde territory well, with periodic close inspection for cracks at the bottom bracket and head tube area

By aluminum, i mean something built sturdy like your Colnago, i wouldnt expect an old bonded aluminum Viner to hold up as well

Over 3 bills and maybe steel starts looking like a more attractive option ---- shoot, my carbon Cannondale has a 315 lb suggested weight limit too -- and weight limits for bikes are a bit like weight limits you see on ladders at the hardware store, -- it says 250 lb weight limit, but roofers run up and down the things all day long with 2 bundles of shingles thrown over their shoulder