There are indeed a lot of changes that occurred in Aaron's status. He was able to reach level 130, just twenty levels behind level 150, where he would get the chance to reach Rank-3.
If not for him diving into loot dungeons for credits, he might have reached level 150.
Though he had many credits, with the increase in attributes, his appetite also increased. His body craved an increase in both quantity and quality of food.
Eating low-ranking food items was no longer enough for his body as it was before.
An increase in the quantity and quality of food means an increase in expenditure on groceries. So, he had no choice but to dive into loot dungeons to gain some Dusk Credits.
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With the increase in level, the FSPs he had also increased. It was due to the presence of a hidden attribute that the number of FSPs was a bit controlled.