a level choices pls help omg

So I'm thinking about doing Maths, FM, History and Psychology for alevels and then doing a degree like Economics or Law. I would much rather do Economics A-level than Psychology however there's a timetable clash with Maths (bruh) so I had to pick from another block so I've gone for Psychology.
I'm aiming for universities such as UCL, Bristol etc. Do you think my subject choices put me at a good chance of doing Econ and law?
ALSO SUUUUPER IMPORTANT: UCL wants a grade A in Econ alevel to do it at Degree if it has been offered at your school. But I'm in an awkward position as it IS offered at my school however it's IMPOSSIBLE for me to take it without dropping maths which is way more important. Do you think they'd still accept me assuming I fit all other requirements etc? thanks

Despite not specifying, if we are being real, the majority of Econ undergrads will have economics A Level. I would definitely speak to your school about this. However if not it’s not the end of the world. History, English and psychology (and other humanities) definitely bode well for Law though!