I'd add that if you pick Ireland as the VPN exit country, it will have notable benefits:

• Sites that pick language based on IP will probably do English.

• It probably won't add much latency.

• Ireland isn't too bonkers and hopefully won't have any large collection of online laws of their own that become an irritant.

• Because Ireland has a considerably smaller population than the UK, if people in the UK do this at scale for pornography, it will make the Irish statistically look like absolutely indefatigable horndogs, which I think will be pretty funny on visualizations.