Wanted: 650b wheel, 5800 crankset, disc forks, rack, disc brake

Looking for the following to some builds up to scratch:

1. 650b disc front wheel, ideally QR. Nothing flash just enough to try out, preferably with tyre. If the rear is 11spd would consider a set.
   
2. 5800 crankset 165mm, have a 175mm to trade if that's be preferable
   
3. Disc fork, 1 1.8 steerer and as much clearance as possible. For external headset
   
4. Wald front rack - sick of the back sweats commuting.
   
5. Front disc caliper