Replying to Pow Skis and Brakes

So, I got some pow fatties last week and I wanted to get Marker Griffon Schizos for they're versatility, but I had to get them in a 110 width (my skis are 130mm) because it was hard to find the binding, let alone in a 130 brake width (I got the 2013 model). So, I figured I would just take them into my shop, buy wider brakes, replace them, and mount them, but thought it would be better to post a thread first. So ns, what is my best option? I was thinking of ordering new brakes online and maybe having my shop change them and mount them. Really need good, legit, advice on this one, +k thanks guys!