Replying to Line invaders info

ive done sum research on different skis for the next season and figured id pick up a pair of this years models while theyre on winter clearance sales. im interested in both line invaders and rossi scratch fs wrs (06/07). i wud like to know how the invaders handle considering they are center mounted? does it slow u down, carve better, cork easier, look gay lol?

and also cuz im a noob say im 5'9", 130lbs and lever 3 skier what wud be a good length? my current skis are 161. and the invaders come 161,171...and rossis 167..