Replying to Backcountry rookie needs gear advice

Hello there,

I just moved to Utah for college, and I'm looking to get into some BC touring. I'm not sure about all the gear I'll need though, and I have some questions.

Skins - My skis are going to be the surface one life, which have dimensions of 140-112-132. As far as the skins are concerned, do they need to be as wide as the widest point of the ski? Or is it acceptable to have the skins leave a bit of base showing on either side?

Also, I have some Marker Jester bindings. I was thinking of using trekkers, but would it be a better idea to just try to trade them for some dukes or barons?

Yeah that's about it, I know I need a pack/probe/shovel and a beacon. Anything else?

Thanks everyone!