Sounds like you’ll be passing pretty close to where we are . Moved out here to Cambridge a couple of years ago after 25 years in Glasgow .
Haven’t really had the chance to do much long distance stuff since we got here but have ridden some of the rail trail from Paeroa out to Waihi and can recommend the Gorge as a worthwhile detour off the main trail .Waihi beach is stunning as well , luckily were on holiday there next week and the weather looks good ?
I’m working through the weeks but if you want some company on a sat or Sunday morning when your on the rail trail or maybe on the Waikato river trails let me know .
As far as advice goes , the pies are brilliant , coffee is good , the sun seems to be an entirely different one to the one you get in Scotland and will burn you in ten minutes, the biking in Rotorua is better than in Taupo but Taupo is a nicer place but you wouldn’t be disappointed with either .
The roads are a bit funny to ride on , they have a white line with a kind of hard shoulder which can be anything from 2 meters to 2cm with no link to how busy the road is and certainly round our way there are a lot of dairy farms so even on the quiet roads it’s not unusual to see a milk tanker . There is also quite a lot of nothing in between towns so if you get a chance to fill up on water it’s worth taking it .
I haven’t made it to the south island yet but everything looks amazing and I’m sure you’ll have a great time .
If there’s anything you need give me a shout .