Just to summarize this thread, It tooks me over 2 months, I was about to buy SW SL6 rim, however ended up with S-Works Tarmac SL5 Disc for ~3600$ with Ultegra Di2 6870, Roval CLX40 and Quark PM. Honestly, I would never have expected that it is such a big difference! The bike just goes faster and handles betters. For Di2 and discs, as one said, there is no way back. Even for Campa evangelist.Thank you all again for your opinions!
After a bikefit, I had to change stem from S-Works SL to FSA K-Force OS99 and saddle to S-Works Toupe from Fizik Antares, that's why the bike on pics differs a bit.