I recommend that you contact Digitec customer service directly, as the community cannot help you with delivery dates.
E-mail: digitec@digitec.ch
Phone number: +41445759500 (Monday - Friday: 09:00 - 18:00)
That's easily enough for CS:GO. I would even recommend that you don't buy a Ryzen 5 1600, but a Ryzen 3 1300X, which can easily handle it and save you even more money. According to various sources, you should even get over 144 Hz at 1080 p.
I'd suggest to contact customer service. I don't think other customers from the community can give you any appropriate information. See also https://www.digitec.ch/en/Wiki/4490