Which of these wheelsets for my new project ?

Hello,

I finally managed to get hold of a NOS 1982 Colnago Super with just just cosmetic wear. I am planning to make a modern build with 10 spd Campagnolo Veloce set with Ultrashift gearshifters and Ultratorque crankset, 3T stem, seatpost, handlebars and a San Marco Regale saddle.

For wheels I am thinking of making a handbuilt set with :

Ambrosio Zenith Hubs
Ambrosio Nemesis Rims
Sapim double butted Spokes

with 32/36 spokes front/rear wheel. My budget is 400-500 Euros max and the other 2 options I have is

Flo 30 Wheelset (Clydesdale 28/28 spokes)

Campagnolo Zonda 2013 (18/21 spokes) (low count for my size?)

I am using a set of DA C24 on the bike I use now. I weight 93 kilos and i am 1.92 m

My question is should I go a custom wheelset or a factory set ?

I am doing 70-120 km weekend rides with friends to keep fit for 200-300 audaxes we are doing.

I would like the bike to be able to climb … we got 2 audaxes with 3200m and 4000m in 2 months …