You need to look at the Australian LSA rules TASMAG. US is a bit different, as is their generic use of "LSA" which can confuse things greatly here.
If it's just a kit plane, and I think it is, not an LSA or E-LSA by Australian definition, then you could go RAAus or VH. VH if you want to do aerobatics.
What if any licence do you currently have? RA, PPL, or both, or none? That will influence your direction quite a bit.