Replying to New to At looking to buy a set up

Hey guys whats up. Im a highschooler who just got accepted into colorado mountain college steamboat springs. As a skier from wisconsin I have never really had the ability to ski real powder. I have recently come to posess a pair of marker baron ski bindings that I was able to trade for. I have also found a good deal on some 188 Rossignol soul 7s. My main use for this setup would be backcountry and side country accesible from the resort. Maybe a few shorts tours to see If I am really into it. I am 5'9 and usually ski mostly park. So I have a few questions for you guys.

Where Should I try and mount these skis?
Have any of you guys used a setup similiar to this?
Would they be to long for me? (Im confident I could ski them on the way down but not sure about the way up)
Are their good places to tour near steamboat?