i did GCSE and A level geography, and having done GCSE geography first undoubtedly made the transition to A level harder, so on the plus side you have the fresh mind advantage
if you enjoy learning about the physical space around you (urban development, physical geography, natural disasters) then i'd say it's a good course
if you dislike needing to memorise a fair few facts (case studies) to exemplify the things you write in the exam (probably like psych), then maybe not