I found the fit of the XC 5's to be better than the XC7's but both didn't fit very well. I think the routing of the Boa cable also leaves a lot to be desired as it had a tendency to unship when you loosened it.
The mavics are a really good fit , the only concern I have is the toe protection is a bit firm, I just weighing up how much I think it will soften up. My first pair of cross shoes were mavic and I loved the contageip soles, sadly they discontinued the maxi size they used to do . Their sizings are weird though
you need to post a picture of the skinsuit, lemon yellow is a strong look :)