Figure out what you would have accomplished after 120 days and we will pick up at that point.
Didn't we have a few months between corsair loot distribution and the end of the season? Are we picking up 120 days after loot distribution or 120 days after the seafaring season ended? I remember trying to figure out what Natsu completed during the break in the seafaring season.
Note that Natsu' schedule is based on t=0 as corsair loot distribution, so it would be super helpful to me If you could frame it in those terms.
Also note that Natsu stands to make a lot of money from this seafaring crafting marathon, so he would probably not take unnecessary risks to jeopardize that income unless the payoff for the risk was much more significant that the crafting profit.