Do you know what route your coming up yet?
If you come up and head towards the M90 and then come off for the A93 and head towards Blairgowrie, you can then go via the Spittal of Glenshee, Braemar the Lecht and Tomintoul. You come off at Nairn and you can then look to camp somewhere like black rock caravan and camping park. Something like this:
https://goo.gl/maps/4EZ82gfiqxR2,That would be if heading anti clockwise.
I would take the B9176 Struie Road rather than the A9 for after that its a cracker, then join back on the A9 like this
https://goo.gl/maps/3zMXgbNuN5P2The best bit for me is this
https://goo.gl/maps/L1AU8Z4fpTU2 Kylesku Bridge is a nice photo point, you could break this up a bit to take it all in.
The A82 through Glencoe is nice, quite touristy but normally a quick run on the bike.
I will say watch on the A85 if your headed that way, its policed very well during the summer especially the villages so get down to 30mph.