Replying to Can someone take time to explain mounting?

i know theres a similar post but this makes it easier for me...

if all you ride is park and only park, center mounts are good right? whats the deal with all the +4 and stuff, and center core? i know center mounts affect carving, but what else does it affect, all i want to do is get the swing weight even so i can spin easy. it matters what kind of ski i get right? i just basically want the details about the location and mounting of bindings, all i ride is park too soo....
thanks