The referenced connectors might be a little bit too large, there is really not much room in that area of the case, especially if the connectors are upright and not angled - you could try with a temporarily screwed in CS board and the baseboard and a "dummy connector", with the size from the datasheet, to see if it would fit... On the other hand, I really would not make both ends detachable (it is a bit overkill imho), but of course, it is your choice...
Bye,
Peter
Edit: I don´t think these connectors are much bigger than orange_hands, they may just fit, if you have the coin, order two full sets of them and if it does not fit, you can always fall back to soldering to headers + shrink tube. Don´t forget the crimp pins themselves and a crimp tool, if you don´t have it yet... it is well worth the investment :)