Summer Euro-trip: From Stockholm to Spain through Berlin and The Alps

Hi everyone! I'm planning on going on a biketouring trip this summer (starting 8th August), taking off from Stockholm and my idea is to get to Barcelona maximum mid- october. I have almost no route planned, except that I want to go to Gothenburg and cycle the shore down to Copenhagen, then cycle down to southern Denmark and catch a ferry to Germany. From there to Berlin and then I have no clue where to head exactly, I'm open to wherever. I plan on wildcamping and bringing my stove to rely as less as possible on hostels. Although, I'd be up to do some workaway in a sustainable project somewhere on my way :) Do you guys have any recommendations on where to direct my route once in Berlin? Idk if I should go towards France (and skip The Alps) or go down to Czech Republic and then cross the Alps east-west. Also if by any chance some of you plan on doing some trips through Europe, let's talk! :))