OK
28h rear and 24h front Mack hubs ordered. Ti bolts, stainless bearings. 260g for the pair but cost €300.
Thinking HED Belgium plus. 25mm wide, tubeless and 465g, sapim X ray spokes and aluminium nipples. It will be my first build that will use alloy nipples but I'm really wanting to keep the weight down.
Thanks everyone for helping, 500g from my wheelset should help.