If I had 100% confidence in my LBS or any bike shop in my area then I would get a custom built set. I'm only 90% sure they would know what to do IF I had an issue with an Alchemy or Tune built wheelset.

Fitzroy

I have a pair of these wheels. I weigh 84kg and have ridden 500k over undulating and 10%+ grades. I have them set up as dura ace 10 speed with a spacer. No issues they ride well and handle bumps etc with no noticeable flex

Cheers

Your riding style and strength has far more to do with how long they will last etc. than your weight.

Should be fine, but if you're after stiff wheels, you're better off with Mavic Ksyrium SL/SLS or Fulcrums.

I have had the older c24's and the new c24's. In my opinion same wheels, except for nipple color and front wheel hub fatter. They are my go to wheels for centruy rides and club rides when the roads head for the hills. As the past posters note, all the good traits about these wheels. I also have Ksyrium SL's that have the al. spokes, they hang on the wall most of the time due to the stiffness of the al. spokes that are not as enjoyable on 100/200 mile rides. For short 25's I will pull them out since they just look cool.

Bottom line everybody weights different and has different skill level. Most top wheels work great, you just have to fine the right one that works for your stable. C24's all the way for me.

_________________
Let's finish the ride with a 20% grade.
2011 Scott Addict R1 Matt black
2012 Cannondale EVO "Storm Trooper" white and black

After starting this discussion, I have done 2500km on the DA's,
and consider them the best allrounders, no issues, great on climbs and descents.
bullet-proof.