Replying to 2016-17 Tom Wallisch Pro Skis

Last night my piece of shit head caddy’s broke while jumping onto a box (whole inside edge broke off) I need some new skis fast and came upon my dream ski on Craigslist for pretty cheap, the 2016-17 Tom Wallisch’s. The only problem is the head caddy’s were about a 171 and the Tom wallisch’s are a 164. Does it really matter that much and will these skis slow me down and be harder to jump? I’m about 5’ 11” and weight 138lbs. Thanks for the help!