Armed to the teeth

There was a third path, Shane could choose, But he hadn't been sure earlier if he should choose it.

But reconsidering the other possibilities, Shane thought that it might be the best path to pick in order to improve faster.

He could consider it as a short-term investment.

One could consider it as an investment that would give him maximum returns within a short time. Though Shane wouldn't be able to hold it for a long time, because it would turn useless with time.

After the efficiency of his 'investment' would decrease, he would be able to sell it once again.

Shane wasn't a merchant and didn't want to become one. It was too time-consuming and less productive for the overall future growth that he imagined for himself.

He was neither good nor bad in business and would let others take on such occupations.

Instead, Shane liked to be a hunter and a cultivator, striving for power and adventures.