To be frank, he seriously considered not doing it.
After all, he was so busy already. A brand new profession would definitely be time-consuming. Where did his leisurely Inn Life go?!
First, he had to reach his quota of absorption (which was now a minimum of 10 awakened essence cores). He had slowly tested his capability and capped it at a certain number (which was increasing as the days passed), limiting it so he wouldn't get bedridden and still retain some stats.
This was also assuming he absorbed things within the inn and ate a lot of essence food beforehand.
Second, he had to fight off monsters that came his way. With the Inn now in level 2, the number of monsters attacking had risen by folds, and the average level had also increased.
Fortunately, he had Gideon and a lot of staff who could help him out; otherwise, it'd be very long battles for him every day.
