I know, I know, I know this is not what you have asked for :facepalm:
But :!: :!: I have a 17.5" Cove HJ XC it has a roomy 23" top tube though and as pictured the EA70 post is at its lowest point on the printed scale so plenty of adjustment
Also I have a pair of Kona P2 disk forks in 445mm flavour that can go with the frame