Dada stem & handlebar aluminium or carbon? Can you send more photos how looks that set?
I attached some more photos, maybe they help :-) It's both aluminium as she wants to use the handlebars with clamp-on TT bars. The frame didn't come with painting around the headset area, so as SpCycle seems to use a 57mm top cap and Deda (and all others) 56 mm top cap, I had to put some white nail polish to get a got coverage and look.
How did you solve headset play?
Put some microspacers between the compression ring and top cap. Still the steering won't get rough no matter how much preload I put on, but the headset play disappeared.
Can you link to disc breake rotors?
These are the
160mm Shimano RT-CL900. Just like them better than the Shimano 105 level ones. If you take 160mm brake rotors, you will need to put an adapter at the back for compatibility.