1300β¬ incl. or excl. VAT?
I would go for Ryzen 3000 because of the better single core performance (SketchUp).
https://cpu.userbenchmark.com/Compare/AMD-Ryzen-5-3600X-vs-AMD-Ryzen-7-2700/4041vs3957
https://cpu.userbenchmark.com/Compare/AMD-Ryzen-7-3700X-vs-AMD-Ryzen-7-2700/4043vs3957
https://benchmark.chaosgroup.com/next/cpu?maxScore=14400&minScore=12500&search=ryzen+7
Ryzen 7 3700X - 32 GB - GTX 1070 8 GB - 500 GB SSD
https://geizhals.eu/?cat=WL-1314462
I think IF you want to use the GPU for rendering, 8 GB would be the better choice atm. (if your scenes will fit into 8 GB). Otherwise you could go with a GTX 1060 with 6 GB. Or since it has been announced that V-Ray will get out-of-core rendering you could also take the GTX 2060 (6 GB) to have at least some RT-cores (30) when V-Ray supports RTX (but as far as i know, there is no timeframe for both features and how long it takes til it is available for the SU version is another question...).
edit: or a RTX 2060 Super with 34 RT-cores and 8 GB for ~400β¬...