Suggest you think this after get your HKCEE exam result.
Now, it is too early to say this.
back to your question
if you get enough HKCEE exam result to study F6, you study F.6 is your first choice.
if you not get enough HKCEE exam result to study F.6, suggest you study IVE
IVE has F Dip > Dip > High Dip
university comm college has Pre-Asso > Asso
High Dip = Asso
suggest you ask this question again after get your HKCEE exam result