Wireless Joint

I'm in a rural area in Italy and currently only have ADSL at 7mbs. I'm looking to upgrade to a 5G router/modem setup with a mix of 2 kaiser directional antennas and a lowcostmobile panel antenna.The cell tower is within eye sight (5kms away). The 5G infrastructure here is still "coming up", the tower I'm connecting to doesn't have true 5G yet rather 5G DSS but I'm hoping this setups speed will improve as the cell infrastructure does.

I was thinking of getting either the Quectel RM510Q or the RM502Q, I know the only difference is mmWave antenna support but I also read that that the antennas are hard to find and will probably won't be useful for my use case (cell tower distance, short antenna wires otherwise speeds degrade significantly). Is there any point in getting the RM510Q over the RM502Q? Also what's the difference between -GL and -AE? I read on the Quectel forums that the AE can support more ENDC bands that's better in the US, is that the case in Italy as well?

As for the router I'm looking to get the ZBT WG1608, will that work with either Quectel Modems? Any other router you would recommend?

Antennas:
Kaiser: https://www.amazon.it/dp/B09CWCDMDK
LowcostMobile: https://www.amazon.it/dp/B08ZSFW4YK?th=1

Cell tower I'm connecting to: https://imgur.com/a/O8ZtbLn

What do you think of this setup? Any tips and advice is appreciated.

Performance-wise there is no difference. Bands wise, the GL supports less bands overall. You can check their stats side by side on the Quectel website. Overall its just the Stand alone 5G bands if I recall correctly. Country of use shouldn't matter with Quectel, I think. Might be safer with the GL.