Watching the video of him at the show versus the video of you trying him at home, I personally wouldn’t buy this horse unless you can go back to Europe and take him to a show or two yourself (a short lease perhaps?). At that point, your money might be better spent in the States or Canada, but if this is your first proper jumper, I might reconsider. Like many others have mentioned, he is very peeky even in familiar environments, and if you’re anything like me, a bad distance or two sneaks in every so often as it does for all of us amateurs and I hate to think what that could look/feel like at any real height. I leased a REALLY cool jumper who had miles through the 1.35 and was crazy scopey and careful, but if you got that mare a titch too close to the base, you were going to the MOON. Fast, catty, gorgeous, and so kind, but girlfriend was crazy allergic to wood. In her case, the short spot was always worse than the long (bless her, she NEVER played on the back end and had several very reasonable opportunities to send me packing but never did) but even as a seasoned jumper rider that definitely shook my confidence a little. I quite like the way he jumps/goes, but from my perspective as an amateur who happily/comfortably jumps the 1.20s, this wouldn’t be the horse I would pick but we could be very different riders!
The best advice I ever got when selecting a jumper as an amateur with reasonable height (but no GP) aspirations was from an old school trainer who has seen a lot of sh!t and ridden a lot of horses. This was when I was looking for my first amateur jumper. I had junior jumpers, but took about a 10 year hiatus, so it was more or less starting from the beginning. His advice was to look for an equitation horse with a motor. Upright, a canter like it’s climbing trees, jumps cleanly and tidily, but not so well that you’ll regret your choices when you invariably miss a distance or two. Up to you whether you want something that cracks its back, but for anything under the 1.30s, this seems unnecessarily aggressive/uncomfortable for me but you might prefer something that gives you that feeling! And then he would make me intentionally miss when I tried the horse(s). Find the long spot, find the chip, see what happens. That quickly took a few contenders out of the running that I otherwise would have vetted thinking that I would be totally fine with how they miss. It might not work for you, but it’s some of the most solid advice I’ve ever received and advice I still employ when horse shopping to this day! Good luck whichever way you go!