Found this which I have printed out for my reference pack in my flight bag.
https://www.avsourcemanuals.com/medi...20Pans-Ops.pdf
4..2NM is doable but I still reckon your into cowboy territory if you are doing it in the min VIZ.
Anyway not something I have to worry about these days thankfully. If a circling approach anywhere near mins was the only option my CP would have zero issues with diverting. Must admit its years since I have to know this stuff on a daily operational, so I apologise not being up to date with the current limits