I love how you basically had to repeat your question to get it back on track. Thanks for that Srd.... it is important to note when we're starting to go off topic and rectify it before mods have to do splitting work.
Look aspiring does have a point (somewhat... not expressed in the best way): You will find methods as a pre req in a number of degrees (particularly those that are technical and require that level of understanding)... Saying most is a massive stretch, especially if you haven't gone through them all and tallied it up (or even experienced the process!)
To put it simply... I would consider staying with Methods if you are competent and believe you can get a decent SS in it. The biggest misconception about Further is that it's an 'easy' subject, because it
is not, in any way. Sure, the content might be a bit 'easier' but this in itself presents a challenge, given VCE is essentially a competition and when you have a big pool of students at the top end, it has to be separated somehow.
Then again, I think if you have set your mind on Further, do 1/2 first. Foundation is extremely important, along with actually having a chance to review what's taught before it really matters in Year 12. Further's content is extremely lengthy - especially the first part of core which really nearly goes for a term in itself (data/stats)
Good luck!