4 A-levels and an EPQ is a lot of work - I did Maths, Biology, Chemistry, French and an EPQ and it was just about manageable but only because I got the EPQ out the way as quickly as I could. If I did it again I’d keep the EPQ (really useful for building academic reading and writing skills as prep for uni, gave me something to talk about in my personal statement, and I got reduced offers at a few unis because I had a good grade in it so it gave me more options for an insurance uni choice - check if this is relevant to any unis you’re considering) and drop an A-level, I didn’t actually need 4 anyway and the stress wasn’t worth it.
As long as History, Maths and Economics would work for your chosen uni subject I’d suggest considering dropping Physics, but definitely do the EPQ. If your school would be open to letting you drop a subject after a couple of months it might be worth trying out the 4 A levels and the EPQ to see how manageable it is for you.