Simple Wi-Fi PTMP Configuration

Hello everyone!
I would ask you to give me some tips/help for a configuration i have to set up.
I have 3 buildings close each others (Main building is far 60 mts. from 2nd building (clear view) and 80 mts. from 3rd building (2 trees between)) and only the main building has connectivity. Assuming that the only target of my configuration is to have wi-fi connectivity for users in building 2 and 3 from Main Building, so a simple access point on everyone as i cannot use cables, and considering also to expand the wi-fi on Main Building, my thoughts are to use a mANTbox 2 12s on main building (B2 and B3 are on the angle of 120 degrees) to configure as AP for users and AP-Station, and N°2 SXT 2 configured as Station and Repeater, is that correct? Does this config fit my needs?
Keep in mind that primary connection to ISP is up to 30MBps and maybe in future up to 100MBps, no other Wi-fi in a range of 1 km.

I Hope i gave you enough infos, thank you for your help! :slight_smile: