For paper 1, prepare your creative writing as much as possible; you want to essentially bring in a finished creative on the day, and just adapt it to the stimuli provided. Practice writing it out to the extent where the creative section of your exam only takes up 30-35 minutes so as to dedicate your time to the other sections.
I used to start with the creative writing first, because my hand wouldn't be tired at the time so I can get it out of the way fast and save time for the other sections. After that, I tend to go for the extended response section. I used to prepare my essays as well, so my approach is to adapt it to the question (as you should) and spend no more than 40 minutes writing it out (this isn't an issue if you've practiced sufficiently).
I tend to leave section 1 last, because in the worst case scenario you can rush that section if you're running out of the time, but ideal you want 45-50 minutes to get this section right. The other reason for leaving this section last is that if you didn't complete your essay or your creative, then you would be handing in an incomplete body of work, and will be marked down heavily for that. But for section 1, not finishing it is just not answering one of two of the questions, and that doesn't impact the completeness, coherence and structure of your work at all, so you'd lose less marks for not finishing section 1 as opposed to the alternatives.
Best of luck!
