Replying to Wife's skis - did I make a mistake?

wife: 5'6, 130lb, skied once 3 year ago(that was my first time too), and I finally got her into skiing this year(win!). A friend was selling a pair of 163 K2 Lotta Luv(2010-11 model I think?) w/binding for 250 and I jumped on it. I think this should work out since she's taking lessons at killington, and I'll let her use rentals since for beginner 163 is too long for her. but after she's done with classes I think she's going to progress fast and 82 waist/163cm with some tip rocker should fit her fine length-wise. granted it's nothing "bomb" or "cool" but I think this should work out. OTOH, this other skiing girl I talk to is against this idea and they insist that 163 is too long and 250 is not that good of a deal. NS, what do you say?