Lovely looking set up. I was jealously thinking "well we can't all have that kind of money to spend" but then I realised that I have probably spent double what that lot cost over the years buying crap and less suitable stuff (not that I have many regrets). I think If I had access to some nearby woodland that I could fully utilize I might switch to similar stuff. Sadly I have no where local that I can have many wood fires or make much in the way of shelters hence the need for more modern kit.
Cheers, I get a fiver a week pocket money, then Christmas and birthday presents, so I just save up- it's strange how it all accumulates!
As for the land, I reckon you could get permission, or you could even attend meets where you can do it but it's organised already .