Joined: Jan 2010
Posts: 9,797
Likes: 1,763
From: Northern California
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
32 holes leaves more metal at the periphery of the flanges.
If your hubs are new, then they should be reliable for many years.
The few I've seen with busted flanges had been tensioned up, however unevenly or tightly I can't say, for 25+ years.
I wouldn't worry much about this as long as radial lacing is avoided.