I have been riding this MPD at 30 mph in the course with no trouble. At 140 lbs and skiing 30 mph, it might not be too long. You can always make a ski feel smaller (fin settings, etc), but it's really difficult to make a short ski feel bigger.
Slalom Ski Sizing Chart
Plus, I'm offering to ship it for free. Come take it off my hands. It is a fantastic ski.
Previous: 1993 Prostar 205
Red 1998 Ski Nautique, PCM GT40, 310 hp, , Acme 4 blade, Perfect Pass SG/Zbox.
Be kind. Have fun.