Replying to 180, too long?

I found a great deal on some mad trix's, but they are 181cm. I'm about 5 10-11, and will prob. be 6 feet by the time winter starts. I will use them mainly for all mtn, but I would use them in the park too. I weigh 130 lbs. Yes, I am a stick, I don't care. I'm not a very solid or strong skier, but I can tget down all the icy blacks in the SE fairly quickly. Would these be too long, even if I used another pair of shorter skis for just the beginning of the season? I need to know veery quickly cause My deal will go away very soon. Thanks.