I would make it some sort of useful 'training' mixing it with some great experience. Why not do a Mountain Flying course. Most South Island aeroclubs offer a 5 hour mountain flying course, so it would give you a few hours in the logbook, some stunning scenery and exposure to something that is not commonly encountered in the UK but might be if you venture further afield to France/Italy/Switzerland etc. Something like:
https://www.wakatipuaeroclub.com/fli...untain-flying/