I use carbon tubs currently, but they’re 60mm deep and probably not the best choice for an all round wheel. I’ve run them in a variety of conditions and to be honest while they are just fine 90% of the time, in strong cross winds they are a bit of a handful. Consequently I’ve got some 32mm Corima tubular carbon rims being built up for me at the moment.
A 50mm section rim would be more manageable as an every day rim. If you went clincher it won’t be all that light (for example the Strada offered November Bikes Rail built up with 20/24 spokes – CX Rays – come in at close to 1600g. Yes they are fast but they are relatively heavy. To give you something to comapre that to, my 60mm tubs weigh 1400g.
At 14 stone ou could probably get away with 24/28 spokes. Have you looked at something like a Pancetti SL23, which is a modern alloy rim. The Archetype used to be the go to choice but apparently, according to my trusted wheel builder (Strada) they have suffered with quality consistency issues that make it impossible to build a decent wheel when that issue arises.
I also have the Dura Ace hubs and I really like them. The ‘cup and cone’ set up is not really true cup and cone, it’s much much easier to maintain and adjust than that. They also have a titanium freehub which is more resistant to biting from the cassette.
If you did want to go carbon deep section then the Light Bicycle carbon rims get a very good reception here. You’ve also got the option of Corima from Strada in either 32mm or 45mm (tubular) and Wheelsmiths bring in 38mm, 50mm and 60mm Gigantex in both clincher and tubular (these are the ones i have), but they do put a weight limit of 85kg on them.