Cannondale SuperSix Evo kids bike

Picking up some second hand 404's would drop half a kilo off your bike and give you a big advantage against the wind, then it's a case of looking at each part and balancing weight savings against cost against practicality- the Smud carbon cages would drop 100g, but tie you into one specific bottle (of which I have loads, btw) for example.

I'm not particularly bothered by adding weight with paint. I'd rather ride a bike I liked the look of, even at a penalty of ~200g or whatever.

For the reason Tester outlined below, I don't really want to outlay too much on wheels until it's truly justified. Also, I'm not going to go absolutely WW til death. For example, I'm fine with my elite cages. They work fine and for the sake of a couple of grams, it's probably not worth the money. I need to be able to ride this bike 5 days a week, so I'm never going to make it unusably light. Just shaving a bit here and there where it's cheap.

This is the bit which everybody recommending expensive wheels seems to be ignoring. If you spend £1k on some carbon bling and then get sent straight back to Shimano R501s for want of money the first time you get involved in a Cat4 pile-up, it's all for nothing. If you're not racing, the 10s per hour you save by getting 60s over 30s is utterly irrelevant.

Hopefully the hybrid rims might stand up to a thrashing a little better than full carbon, although I take your point. There is also the cost and waiting time involved in the 60s which doesn't hold true for the 30s. I could order the 30 rims now, and build them up 20/24 to CX rays on to some decent hubs and have a decent working wheelset for £500 in under a month, probably.

You're ignoring the awesome noise that deeper rims make.

Apparently they sound like a Star Trek warp core at speed, which is a serious selling point for me.