The more I roast the more tricky I find it commenting on graphs from other roasters
That said, my best guess would be, with the same time to yellow, aim for first crack start 9:45 - 10.00, using less air throughout the roast = keep your initial fan setting until just before or just as first crack gets rolling. Lower air will mean you will have to use less gas coming into first crack.
Delta ROR looks pretty flat coming into first crack and then it drops off into first crack pretty hard. I am guessing some roasters would just look at that and call it baked if following RAO. Lately where I am at with my own roasting on a much smaller machine, I would find it hard to disagree.
second thoughts....I agree with Moxi as well, try charging 180 - 185, this might mean a slight reduction on batch size to keep same dry end?
Third thoughts.... based on making 1 change to this roast only = at about 6:45 I would start lowing gas more, that's where the upward trend starts.
All the best for you future roasts.