I'll be going on a wildcamping and hiking trip this August with two friends. We're all fit young guys with decent gear that will be probably be able to handle most trails, but do not have prior experience with multiple day hiking and wildcamping. The Skye trail in Scotland and the Lofoten crossing in Norway look absolutely spectacular, but from what I've read, they are not suitable to beginner hikers. Also, we will probably avoid Scotland for this trip because midges seem quite problematic in August.
What are some (almost) equally spectacular trails that are just a little bit more suited to beginner hikers and at their best in August? To be clear, we are looking for a real challenge with plenty of elevation change throughout, without being irresponsible for novices. Wildcamping must be legal, and the trail must either be accessible through public transport to and from a European airport, or within a 1-day car drive from the Netherlands. Thanks in advance for your help!