Vickie looks to be coming along nicely. I’ve been looking at mixtes, as stated above, most are too small, 51cm and smaller. There was a titanium mixte for sale last year, eBay, if it was 53cm, I likely would have been bidding. Can’t remember what it sold for.
There is a pretty nice looking Dawes, 53cm I think, on eBay, now $350 plus ship, obo. While I am not fixated on weight, most mixte framesets come on the heavy side.