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Yes those would work. You want to get 2 of them to use the diversity of the 4G Module.

You can also find some antennas on amazon too, just find 4G LTE antennas, up to 5dbi.

You are in Europe. If you want to get the absolute best signal possible, you can find what 4G bands your operator is using, and what frequencies, then get an antenna that can handle only those frequencies. Antennas that are only made for 1 frequency are much better than antennas that are made to handle a few different ones. So you could have 1 antenna in the Main connector for for say 2100mhz and another in the Diversity connector with just say 1800mhz (this will depend on your frequencies of your operator ofc):