There are NO subject requirements for Law - they just want 3 high grades.
So choose 3 subjects that you will enjoy studying and where you feel confident of getting those top grades.
For any other subjects at Uni, they will be very clear about any required subjects on each course page - ie. AAB including English etc - and for the other subjects, they really do not care what they are, they just want the grades. Stop guessing about this and stop listening to any 'I've heard' nonsense - if in doubt, phone/email the Unis and ask them.
If you dont enjoy Geog, don't do it.
Don't do 4 full A levels - you are risking all your grades by doing this and no Uni requires or prefers 4 A levels - plan to drop one after AS/1st year if your school is being silly about this.