@OP: being new to this game I’m finding that practice is needed.
Practice in packing for riding, riding with packs, unpacking and setting up, breaking camp and packing up again. It’s good to have a system, remembering where you put everything (i.e. Where the hell is the fire stick for lighting the stove when you stop for a brew…. 😳 )
I’ve done four bivis now and I’ve still not got it right.
I’d recommend that you have a couple of ‘dry runs’ first, even if it’s cycling somewhere fully laden, setting up camp, making a brew, breaking camp and riding home. Obviously better if you can actually bivi though as there’s nothing like the real thing.
If your packs are new they’ll take time to ‘settle’, you’ll undoubtedly pack ‘wrong’ the first time, you’ll find the places that your luggage rubs on your frame and learn how the bike handles with kit. The Cairngorms Loop is full on for a first trip, many times so if the rivers are high or other inclement weather. The grit also goes for your bike/contact points/brake pads.
It is absolutely stunning out there though 😀