I can recommend Halo Aerorage for off the shelf wheels, or a custom build of Mavic Open Pro rims with Tiagra/105 hubs. Either way you're looking at somewhere around the £200 mark for a pair.
You want to be looking for wheels with 32 or 36 hole hubs, (both above options are 32). If you find some decent used ones happy days, if not I'd ride yours to destruction while saving for some new ones. You'l be surprised at the abuse some wheels will take. Just check your spokes tension is OK, don't ride with loose spokes, and if a wheel goes go out of true get it fettled straight away.
FWIW I'm not much lighter than you, and I rode a 20/24 spoke wheelset for a couple of years on a carbon bike I had. Never had a problem with them
