its by far my favourite subject and thats even what i want to do at uni. It depends on your teacher as well. mine arnt great but i still really love the subject. It can be hard but you will improve on essays over time
i would defiantly say do history
The workload was the least out of all my subjects - I took maths, further maths and physics alongside history. But then again I'm not a good example - I didn't need history to meet my firm offer so I didn't revise it that much (incidentally, two of my other uni choices didn't care whether I had A in further maths or history!).
A huge part of it involves nailing down a formula for your essays. For the thematic civil rights essays I got that formula right away, but with the other topics it took a while to get comfortable with them because they had a different style of essay. Usually you can expect to do a couple long essays as opposed to many short questions like you did in GCSE. In the Civil Rights paper, we did one 30-mark question and two 25-mark questions.
I think I liked the lessons themselves more than anything because it was a tiny class (7 of us) and we got on really well with the teachers, we had some nice spontaneous debates and sometimes got completely sidetracked, it was great.
Oh god, and coursework. That was probably the most stressful part for me because I procrastinated so hard. It's very interesting once you get into it, looking at a historical debate and picking apart all the various arguments, and if you do well then that's a decent chunk of your A-level already acquired.
Unis will look for history A-level only if they require it - usually they don't care what you take outside of the required subjects.