Replying to Armada El Reys.. durability, what binding, where to mount?

I am looking to get some El Reys for next year. I need a cheap ski, and I was thinking this or surface no times..
I will be in the park 90% of the time.
How are they for durability, park, etc?
Also, what binding should I get.
I don't know much about skis, I just ride them.
I also need a cheap bindings up to lets say about a din of 12.
I am 6' 0" and weigh 130.
I would say intermediate to advanced.
Also, where would I mount them.. center? even though armada recommends you don't, would they be okay like that?