Wound Up fork - is there another disc road for out there that is going to match the wound up for practicability but not look shite?
I'd build the frame to take a 395mm axle to crown fork, and the head tube to accept tapered forks. That allows you to choose any modern CX fork, it's only an inch longer than a road fork and you have more than enough room in your stack height to accommodate that, and it will give you mudguard clearance even with big tyres should you be moved to go off the beaten track. 3T Luteus looks nice, and at £250 cheaper than WoundUp too.
I'd build the frame to take a 395mm axle to crown fork, and the head tube to accept tapered forks. That allows you to choose any modern CX fork, it's only an inch longer than a road fork and you have more than enough room in your stack height to accommodate that, and it will give you mudguard clearance even with big tyres should you be moved to go off the beaten track. 3T Luteus looks nice, and at £250 cheaper than WoundUp too.