Your pro shopp wont have any trouble installing them.
If I was you I would get the pro shop to order them for you cause they are a tad cheaper from a pro shop thats if the shop passes on the discount.

You will need to put a twist or two in the string after it has been shot in but after that they will just be fine.

Also you could look at Stone Mountain strings they are a about the same quality as the WCCB strings but dont have the big price tag and are pre stretched as well.