Hello I'm new to French and I plan to attend DALF C1/C2 within next 6 to 9 months. Can you make me a roadmap?

2. What books should I gather? Currently I'm studying with Cosmopolite A1. Planning to buy the big ass Oxford-Hachette French dictionary and Cambridge Thesaurus for lexicographic needs. But I don't know which grammar book would help. Any Cliff's TOEFL like alternative? Also Dalf / Delf mock book series available? Suggest please. I know I can get pirated PDFs, but they don't come with CD ROMs. So I plan to buy my own stuffs.

Let me know your experience. TIA