Wtd: 11 speed cassette, look pedals, 17 degree stem, bottom bracket

After the last few parts to complete a build, before I buy new, thought I’d see what’s out there.

I’m looking to get the following;

• Ultegra cassette 11/30t ideally with plenty of life left. May end up going new
  
• 17 degree stem, 100mm or 110mm, all black preferred
  
• Look road pedals
  
• Bottom bracket to fit ultegra 6800 cranks. English threaded
  
  

Let me know if you’ve got anything