New to North Devon Roads - routes/tips please!

Hello all - looking for some advice on best routes in North Devon!  We have an airstream, and are booked at Stowford Village campsite this May.  We are newbies of 2 years, and have so far only taken her local to us in Sussex /East Sussex/Surrey, being really careful with routes.  But this trip is with other friends/family in mind, so we haven’t had the luxury of choosing the most practical part of the country to tow an airstream…

We’ve chosen the site itself as it accepts twin axel, and the actual site access looks doable, but we’re acutely aware that we are big and cumbersome at the best of times, let alone for North Devon roads, and particularly when it comes to turning.  We want to make sure that we get there safely ourselves, but also that we don’t cause upset /blockages for locals and other road users.  I’ve been using a combination of google earth and traditional maps to try and get a handle on road widths, angles and gradients, but I’d really appreciate any insight from those significantly more experienced than us, on the best way /possible way to get there.  Coming from Sussex and absolutely not looking for the fastest way - just any practical way??  🤞🏻🤞🏻🤞🏻