While waiting for your new toy to arrive, why not search the YouTube to see those reviews on it, plenty in there to make you want it even more.
If they won't or aren't keen to when you are spending 600 + quid, I'd restrain yourself and drive to somewhere that will _
Range and Country in Sleaford as well as offering a lifetime GTee on all new rifles bought off them (with the exception of a couple of budget brands) even chrono all second hand rifles and attach readings to each rifle with a tag. That's impressive. I've seen it in a few gunshops.
I have no connection with the above, they were just very impressive when I called in when in the area and I remember stuff like that _
Looking for TO-6 Trigger unit unmessed with or T0-6 kit for 34
I've got one it .22 - and it's fabulous! 10 shot group size at 25 yards can easily be covered by a 1p coin. Experiment with pellets and don't waste your time with cheap ones. Mine likes H&N Field Target Trophy (not sure if these are still for sale but I bought 20 tins years ago and are still plugging through them) and Bisley Magnums. It never jams up and refilling it is a cinch. You've bought a brilliant rifle - well done.