Greg_KLots of good advice on here and agree you have lots of great options in your price range. Keep in mind that all of the recommended skis are twin tips with rocker so they ski and feel much shorter than a traditional ski and are lighter in weight than an on piste carving ski is. Also an "all Mountain/Park" binding mounting point on any of these skis is way closer to the center of the ski than a traditional ski making it pivot easier and feel shorter. I'm about the same size as you and my twin tips run from 181cm to 191cm in size and they are perfect.
Most of the skis mentioned have been around for at least a couple of years without changes except topsheets so huge deals can be had on last years ski that is the exact same construction inside. Check online around your area as there are many people selling brand new skis for deals privately too.
The Squires 11 are not a great binding honestly for larger riders with the Griffon being a much better model but for the same price as the Squires, you could get last years model of the Attack 13 Binding which is a fantastic binding! This years version of the Attack 13 has the ability to fit WTR boot soles but if you are not changes your ski boots anytime soon, get last years model at a deal. $100 US range for Last years Attacks brand new.
The Line Tigersnake is a soft, playful park ski that you could use outside the park but is more a beginner, soft snow park ski and even at 178cm you would find it limiting for you size and ability outside the park. The Line Chronic is a stiffer, wider ski that would be a better choice in the 185cm length for your size with better performance in harder snow and all over the mountain. The Line Blend in the 185cm goes wider still but is very soft and playful and the width would help off piste but it's light weight would still be fun in the park.
Others skis in that range would be the Nordica Soul Rider 97(a slightly stiffer Line Blend), Armada ARV96 (stiffer and more stable than the Blend or Soul Rider 97 and one of the best values in this range. $500 US), Volkl Revolt 95 ($400 US and a great all mountain twin). All of these skis I'd recommend in the 185cm/184cm/181cm sizes as that size will be more stable in/outside of the park while still being tossable inside the park due to their light swing weight and near center mounts.
Good luck on the search!
Thanks for the detailed response! A couple of questions I've got....
1) Do you think I should mount the bindings factory recommendation or go closer to true center? I was thinking to do factory +1/2cm, so getting closer to true center but in between.
2) I'd actually go for the Griffons then, since it only adds up like 20€. Is there anything else I need to worry about? I might need to buy new boots in the next 1-2 months...
3) I guess I'll go for this years editions, its really hard/not possible to find the last year versions in my area anymore and it seems like I could get these skis and bindings only seperately. If I'd go for this years I could get it in a set, which is only like 30-50€ more altogether. (And I really wanted to get the ARV96s, but they are just not available in the right sizing anymore w/ seperate buying compared to the Blend or the Chronics...so I guess either of them it is.)
**This post was edited on Dec 25th 2017 at 10:40:04am