Parents. -Help!

So,

Skiing is one of my favourite things to do in the entire world, actually forget that, it's my absolute favourite thing to do.

Unfortunately it seems i was born in the wrong part of the world, I was born and currently live in London, England (most of my family lives in Canada), and depressingly i only get to ski a couple times a year, now call me what you like, call me a one week warrior if you want (although i do ski more than a week a year, usually 2 or three), i really don't care, i enjoy skiing and thats all that matters to be honest.

So, i own my own pair of skis because well, renting skis isn't the greatest in my opinion and it often actually works out as cheaper in then end.

Anyways, the skis i own are a pair of all mountain skis (my parents bought them for me) and they're pretty weighty, mounted pretty far from centre, have a huge swing weight and are more of a charging ski. I've been trying to progress in park the past few years so i've ended up renting a pair of twin tips every now and then, anyways long story short i recently purchased a pair of atomic punx in order to support my love for park skiing and hopefully let me ski in England too! (there's a indoor ski centre near where i live which often has a park setup)

So i'll get to the point now, i've been saving for months and months and months in order to purchase these skis and i finally got enough money to order them (with help from the christmas sales) i talked it through with my mom and she didn't seem to care that much and was like yeah ok whatever, next thing i know my dads furious and starts saying that he's sending them back as soon as they get here with no discussion about it. I don't think he understands that you can't really progress in the park with skis that are hugely heavy and not what any person with any sense of what park skiing is would use in the park, he doesn't know anything about park as he's only ever skied groomers.

Long story short, i told him that its my money and i've been saving a long time for this and its what i'd like to spend my hard earned money on (i've spend months painting doors and walls for hours on end not to mention the baby sitting) Still he was having none of it and told me i don't need two pairs of skis, which i could kind of see, but twin tip park skis and all mountain skis are very different, although i was willing to sell the other pair in order to replace them with these ones, but still he needn't listen.

I guess why i made this thread is because i'd like to know what you guys think?
Do you think he's right in sending my skis back without even really understanding why i bought them?
Do you think its right that even though i worked my ass off to afford them he should still take them away?
What would you do?
Some what tempted to just order them again if he sends them back, or even just hide them when they come, but this would obviously make him even more mad.

A bit stuck here NS'ers any help would be greatly appreciated.

Oh yeah, I'm 16. Not 30 and still living with my parents.

(All of this given I'm very thankful for all the things my parents do for me and grateful for all the amazing things they give me, including the skis i already own, and I'm not trying to be disrespectful by buying another pair of skis, just trying to get a ski more catered to my needs now, therefore if i did happen to sell the skis i already own the money would of course go to my parents)