Buying new park skis, specifically on3p mago 100s but not sure what size

I am about 6'0 and 145 lbs and I found some used mango 100s that are 161cm which is a bit short but I do ski park so I'm not sure if this is a good size or not. I currently ski line honey bees which are 166 cm. If they are shorter they should spin faster but would they be too slow? My current skis are noticeably slower but I'm not sure if that has to do with the quality of the ski and maybe on3p skis are a lot faster. Do you think I should buy them? Also they are in very good condition and are the ones from last season and come with Look Pivot 15 GW bindings.