Replying to Ski dilema? what shall i do??

hey ive just got myself some AR6 181, im 5'10 75 kg (160ish poundes) ski mountain and been skiing park for the past few years but no as a park rat. ive previously been skiing on some 176 rossi bc which i love. with recomendations i chose the 181's and going to mount center or near, but they just look huge and are about a couple inces taller than me. ive never skied on anything this long and for primarily a park ski (but will skiing all over the montain too) i just think 181 is to big.

i can take these skis back for change so i was wondering what your opinions are? should i downsize to a 176 or is the 181s fine?? also i could change for another ski if you think another would be more appropriate?