From what I can remember we sort of did a bit of both, but focused more on the further side of things; matrices, business maths and methods of displaying data were all covered, but we went into linear and basic quadratic equations and trig too, which of course are expanded on in methods. My class ended up quite varied ability-wise, so I think they were trying to cater to both streams, but looking back on it I found I got my head around the further side of things a bit more than the basic methods stuff, which perhaps is as good of an indication as any as to what maths I should do...
That's good that you covered aspects of both. I remember we did like all functions, some probability, trig, algebra, all methods stuff. We didn't even look at matrices or business maths.
I'm sure trig is part of further too though and a basic knowledge of functions wouldn't hurt either for further. Despite you getting more of the further stuff, I think it's important for you to recognize that you gave methods a go. Perhaps it wasn't for you, and I think pushing something to make it work for so long might dampen your spirits. I was a 95+ student in methods 1/2 and dropped to not a mark over 80 in 3/4, so I personally don't think it gets easier, but many here would disagree with me. It really depends on you. Above all, you don't want to take a subject that you think you'll work hard in, then give up if you find it too difficult. You sound more at ease with further and I believe that will give you the stamina to stick it out and work til the end to pull some great marks.
I want to give you some anecdotes to just indicate how others have gone facing similar issues.
-I know some weaker students in my year who took methods for prereqs or just in case and ended up with marks they weren't happy with, thus wanting to repeat or pick up further the next year.
-Other people take methods, don't do as well as they want and miss out on their course for not getting the ATAR requirement that they definitely could have met having taken subjects more suited to them (eg further over methods)
-There were two students in my year 9 accelerated class who's vce maths recommendations got swapped. (Strong student put in further, weak student in methods). The weaker student did methods 1/2 in year 10 then dropped it in year 11 and picked up general maths. The strong student though decided to continue with further in year 11 and pick up methods 1/2 as well. He pulled awesome results in further.
-A girl in my methods class was recommended methods for year 11 and took it despite not being too strong and apprehensive about taking it. Three weeks in and she was failing sacs, getting anxious, stressing out. She dropped methods and picked up further and she said it was the best thing she could have done for herself.
Remember that it's okay to drop subjects if they're not your taste. It's important to consider your ability and interests before making your decision. You want law; what happens if you take methods, hate it halfway through the year and give up and only get a 20 and you miss your ATAR req? I don't want to scare you or have you believe that will definitely happen. In fact it might happen in further too. You've just got to establish what you are more confident with and more prepared to go through with. It's a long year and you don't want to have a stack of regrets at the end of it. I suggest discussing your possible courses of action and ability with your teachers again, as well as your parents. And of course others here on AN would be happy to offer you more advice!