I don't need to use the first class facility... I just try to understand which terminal we should be dropped off at this case and minimum the walking for everyone.

I will be the only one checking luggage and we do not want to enter immigration separately (if we could). And they would already have their digital boarding pass or print at home boarding pass. So my first thought was get dropped off at where I should be dropped off.

The only thing I worried was if the First side of terminal was too far away from everything else, then I would want to risk it and maybe we would all end up with walking a long distance.
Otherwise, I would prefer someone to help with my luggage and show my mum and daughter the service SQ would provide at their home.