Thanks so much for your answer, you helped a lot to figure out what i need and confirm some things I had in mind, I'm going to check all the modules you mentioned.
About VCOs, I have some doubts about what to choose, I know Plaits and I also wanted to try something more complex that allows me to do sounds which are difficult to obtain with my regular synths, I think I need at least three to do all the things I'd like to do at the same time. Surely one of the three will be a basic one but to start I'd like something that can give me a lot of possibilities.
The first should be good for the ambient stuff, I wanted to buy a DPO but I'm not sure anymore it's the right choice, I'm also interested in trying a wavetable one in the future. What about the Rubicon by Intellijel, could be good for what I have in mind? Or do you think a digital one is the right choice to start?