First Solo Trip Ever, Scandinavia!

I am a couple of weeks away from embarking on my first solo travel ever!! I am a 21M American/British and have traveled in Europe with family, but never to these places. I have about 15/16 days and would like to see this part of the world that I have never been to. I am interested in going to museums and sights during the day and at night hopefully meeting people and going out in each of these cities. My current plan is to find hostels or hotels in each of these areas now and book them ahead of time. I would like to try to spend $100 or under a night on places to stay.

My itinerary is as follows:

London > Edinburgh > Oslo > Bergen > Stockholm > Copenhagen

I am planning on flying to each of these places except taking the train to Bergen .

Does anybody have any experience traveling solo to this area? If so, any suggestions or tweaks on my destinations? Any advice, in general, would be greatly appreciated. Thank you!!!

First Solo Trip Ever, Scandinavia!