A friend and I are cycling from Edinburgh to Orkney up the east coast of Scotland.
All packed up:

Was wondering if anyone had tips on routes or nice camping spots.
We're aiming to ride on paths or backroads where possible.
Itinerary so far is to head to the East Neuk on the first day for fish n chips.
Day 2 is up to Tentsmuir - nice spots to camp and I grew up there so visiting pals/family.
After that we head up the Angus coast. Thinking of camping at Lunan Bay the next night as someone told me it's nice.
Staying with my pal's brother south of Stonehaven the next night as he has a hot tub

After that we're aiming for Newburgh/Collieston as pal's parent's are there and it's his mum's birthday.
After that... we're not sure.
Can we cross the Black Isle and get the ferry at Cromarty? Would like to a) avoid A9 as much as possible, and b) go to Black Isle brewery if it's open.
After that, what's the best way across Sutherland avoiding the A9 of doom? Should we head up past Rogart and up to Tongue? I've stayed at Sleeperzzzzz before - could be fun to stay there for a night.
Or go to Helmsdale then up the back road from there? My pal isn't really into mountain biking, so probably not an off road path. He's on a Genesis CDA.