Brake levers should be easy to find there are plenty floating around I have a spare set here somewhere and yeah skewers arent that easy to find.
Miche skewers you may just be able to see in the picture on back wheel black 3 hole version with red miche txt.
And yup Mavic X717s on M739s I have the Ritchey vantage rims to complete the build just need to find some M73x hubs and get them built